Butte 100 MTB Race

Welcome to the most difficult mountain bike race in the country: The Butte 100. The Butte 100 race weekend consists of three individual races, a 100 mile, 50 mile and the Sorini 25, taking place atop the Continental Divide just outside of Butte, Montana. The race has grown from a small group of dedicated locals on a gravel road, to world-class athletes competing on world-class trails. With outstanding partnerships with the USFS, BLM, community of Butte, our generous sponsors, and the “neon army” of volunteers, the Butte 100 races continue to provide the best mountain bike racing experience possible. Thanks for visiting.

Please visit our Facebook page for updates and announcements.

 

Finishing the Butte 100 once is a feat. Period. These athletes have joined the elite class of those racers who have finished a cumulative 500 trail miles (either race). For that, we give our utmost respect (and a 500 mile club hoodie). In the short, yet rich history of the Butte 100, these athletes have had a significant hand in making this race the very best of its kind in the country. We look forward to seeing this list grow and honoring more great athletes and people.

Click on names to read their racer feature.

2021: Boz Boswell
2021: Dave Wilding
2021: Kevin Haglund
2019: Nick Dunn
2019: Brian Thompson (SingleSpeed)
2018: Steve Sevilla
2017: Steve Helm
2016: Matt Butterfield
2015: Ben Parsons
2014: Peter Lambros
2013: Mike Bourduin
2013: Rich Shattuck
2012: William Martin

 

 

Aid Station #1/6 (Thompson Park)

~30 min. drive from Start/Finish  ~20 min. drive from previous AS #6
100-milers: 9 miles from previous aid station; Approx. 1 hr. bike time
50 milers: 12 miles from previous aids station; Approx. 1-1.5 hrs. bike time
GPS: N 45° 55’15”; W 112° 24’40.67”
Click image to enlarge map

Take I-90 West for 4.4 miles to Continental Dr., exit #228.
Turn left off the exit, head over the overpass, and take the first left on Continental Dr.
Continue to the stop sign and turn left.
Turn right at the Eagles’ Nest entrance to Thompson Park.
Follow the park road to the T, and turn left. Follow the curve to the aid stn.

 

Aid Station #2/7 (Basin Creek Park)

~30 min. drive from Start/Finish  ~20 min. drive from previous aid station #7
9 course miles from previous AS #7; Approx. 1-2 hrs. bike time
GPS:  N 45° 53’25”; W 112° 28’24.71”
Click image to enlarge map

Take I-90 West for 7 miles to exit #127.
Turn left off the exit, onto Harrison Ave going South. Follow this past the Hwy 2 turn, Wal-Mart, and airport, to a right veer.
Stay right at the veer (curve) onto Basin Creek Rd. Follow this curving asphalt road all the way to the aid station–approx 6 miles; you should see course marking shortly after the road turns to gravel

 

Aid Station #3/8 (Highlands CG)

~50 min. drive from Start/Finish  ~40 min. drive from previous AS #7
11 course miles from previous AS; Approx. 2-3 hrs. bike time
GPS: N 45° 47’33.30”; W 112° 31’17.30”
Click image to enlarge map

Take I-90 West for 4.4 miles to Continental Dr., exit #228
Turn left off the exit, over the overpass, and take the first left on Continental Dr.
Continue 4 miles to the stop sign and turn left onto Hwy 2
Follow Hwy 2 for 2.3 miles to a right fork–it’s obvious, but is unsigned and can sneak up on you. This fork is called Shiloh Ln.-Roosevelt Dr.-or Moose Creek Rd (depending on which map you have)
In 2.7 miles, you will come to some houses and an intersection–simply stay straight through this residential area and crossroad intersection
Highland Campground is about 6 more slow and curvy miles

 

Aid Station #4/9 (Hwy 2)

~35 min. drive from Start/Finish  ~30 min. drive from previous AS #9
9 course miles from previous AS; Approx. 1.5-3 hrs. bike time
GPS: N 45° 51’21.45”; W 112° 26’22.53”
Click image to enlarge map

Take I-90 West for 4.4 miles to Continental Dr., exit #228
Turn left off the exit, over the overpass, and take the first left on Continental Dr.
Continue 4 miles to the stop sign and turn left onto Hwy 2
Follow Hwy 2 all the way to the top of the pass and the CDT trail head parking area just after the second wooden Thompson Park sign
The aid station is just up the trail from the parking area

 

 

Name: Ben Parsons

500 Mile Club: 2015

City: Kalispell, MT

Occupation: Firefighter/Paramedic for the City of Whitefish

 

How Long have you been a mountain bike racer?  My first mountain bike race was in 1992! Been off and on racing since then, though got “serious” about it in 2004.

 

What got you interested in mtb racing? I really like riding my bike, always have.  And it’s even more fun the faster you go…

 

 

Beside the Butte 100, what are some of the other events you compete
in?  Our awesome local Thursday Night Races at Big Mountain, the Montana Off Road Series (MORS), Missoula XC where all the big boys and girls come to town, Fernie 3 Stage Race, Breck Epic, anything that is slightly unique strikes my fancy.

 

What positive effects has competing had on other aspects of your
life? Biggest thing is finding out that whatever I set my mind to, I can do.  Huge discovery in setting goals and achieving them.  Also bike racing has helped me to push myself beyond what my body/mind/society tells me I’m not capable of.  It helps me to have something to focus on and also helps me to find balance in the rest of my life.  In a way, I was born an “addict”, but fortunately that is being exercised through cycling instead of drugs.

 

How many hours a week do you train? That’s a secret    Really, it depends, my schedule is kind of strange so some weeks I will push big and get 20 hours in, other weeks might be closer to 10.  I train, well ride rather more than most as I’ve found I respond well that way, but I also tend to be overtrained and fatigued because I just love to ride my bike!  I think my secret is not having kids….yet.  That’ll hopefully change soon though.

 

What advice would you give to this year’s Butte 100 racers? Enjoy the process!  Enjoy the long rides, enjoy the intervals, enjoy the focus but don’t let it own you, don’t let it stress you beyond what is good stress.  Enjoy having the awesome excuse to get out and ride your bike, a lot!  Enjoy racing a 100 because you can!  there’s a lot of people that can’t, lot’s that wouldn’t, but you have the choice and you have chosen to.  that’s Freedom on two wheels!  Oh, and figure out your fueling.  Do some long rides hard, not just slow so you can figure out what works for food and water.

 

Any other comments you’d like to make? Greatest bike race, friendliest volunteers, most home town feel and enjoyable atmosphere at any race I’ve competed at!

 

104.1 miles; ~16,600 ft. elevation gain; 9 aid stations

View interactive course map and elevation profile

 

Overview

The Butte 100 consists of two laps of the 50 mile course.

All three races will begin with the 4.8-mile "start loop". From there, the 100 and 50 mile courses will follow the same route.

After crossing back through the Start/Finish area and going through the Homestake aid station, riders will turn left and head back out for a second lap on the south loop.

 

Start Loop

4.8 miles; 551 ft. elevation gain; 4.8 mi. cumulative

Start loop on sandy double track meant to spread racers out for safety reasons

 

 

Homestake to AS #1/6 (Thompson Park)

8 miles; +1,563 ft.; 12.8 mi. cumulative

Racers will pass by the starting area. This is not meant to be an aid station but can if problems exist
Black Tail descent immediately follows start loop; single and double track, quite technical,with a bottle neck
Short ride on an asphalt connection, through a housing division to Black Tail Trailhead; 3 mi. climb and 3 mile descent to Hwy 2 crossing and Thompson Park area

 

Aid Station #1/6 to #2/7 (Basin Creek)

8.7 miles; +1,192 ft.; 21.5 mi. cumulative

Granitic to hard pack on climb, loose dirt to sand graduating to gravel road on descent
 ~3 mile climb to the chimney trail landmark. ~3 mile descent from single track  to road- (watch for wash-outs) trail graduates to dual track, established double track, then gravel road into Basin Creek Aid station #8

 

 

Aid Station #2/7 to #3/8 (Highlands)

12.5 miles; +2,593 ft.; 34 mi. cumulative

Sandy, loose, ugly ~6 mile Basin Creek Climb
Join the CDT about 4 miles in- better trail conditions, epic flowy 4 miles on arguably the best section on the course.

   

 

Aid Station #3/8 to #4/9 (Hwy 2)

11.5 miles; +1,266 ft.; 45.5 mi. cumulative

Endless amount of packed CDT singletrack.
Section of trail know locally as “the 8 miles of hell”
3 steady climbs and descents all hovering around 8,000 feet of elevation.
Nice long descent to the Highway 2 aid station.
Those pulling in after 7:00 p.m. will not be allowed to continue, no exceptions.

 

 

Aid Station #4/9 to Homestake (AS #5/Finish)

9.1 miles; +1,344 ft.; 54.6 mi. cumulative

~3 mile climb out of A.S.
~4 miles on popular trail section, weaving through boulders and catching glimpses of Butte on the way- be aware of other trail users
The trail will wrap around a small rise, go through a gate, and intersect with a road/bridge over interstate. Right Turn to head to Homestake. On lap 1, go through the arch and into the aid station, then head back out, taking a left on the road for your second lap

On lap 2, head straight in to the finish!

 

Downloads

Butte 100 Course - FIT

Butte 100 Course - GPX

Butte 100 Course - KML

 

 

The 50 mile version of the Butte 100 is a crowd favorite with epic amounts of single track on the Continental Divide Trail, sweeping views of the Highland mountains, and athletic tests such as the notorious Basin Creek climb. Racers will encounter dense wooded areas with buff packed dirt progressing to loose decomposed granite surfaces. The 50 mile course is sometimes referred to as the “South Loop” because the 100-milers begin their race on the heading to the north portion of the course, before chasing down the 50-milers on the South Loop.

View interactive course map and elevation profile

 

50 Mile Course at a glance

52.4 total miles
8,500 ft. elevation gain
4 Total Aid Stations- Numbered #1-4
More detailed course descriptions will be included in the Race Bible
50-Mile Course

(Click on any maps or elevation profiles to enlarge)

 

 

Starting loop

4.8 miles; 551 ft. elevation gain; 4.8 mi. cumulative

 

Start loop on sandy double track meant to spread racers out for safety reasons

 

Start area to Aid Station #1 (Thompson Park)

8 miles; 1,563 ft. elevation gain; 12.8 mi. cumulative

 

 

Racers will pass by the starting area. This is not meant to be an aid station (#6) but can if problems exist
Black Tail descent immediately follows start loop; single and double track, quite technical,with a bottle neck
Short ride on an asphalt connection, through a housing division to Black Tail Trailhead; 3 mi. climb and 3 mile descent to Hwy 2 crossing and Thompson Park area

 

Aid Station #1 to #2 (Basin Creek)

8.7 miles; +1,192ft.; 21.5 mi. cumulative

 

 

Climb to “The Chimney” on singletrack and some RR bed
Descent on dry singletrack (watch for wash-outs)graduating to dual track, established double track, then gravel road into Basin Creek Aid station #8

 

Aid Station #2 to #3 (Highlands)

12.5 miles; +2,593 ft.; 34 mi. cumulative

 

 

The Basin Creek climb consists of a very dry double track
4 mile climb to CDT left turn (King/Queen of the Mountain checkpoint) 2-mile climb remaining on buff single track
Beautiful single track to Highlands aid station #9

 

Aid Station #3 to #4 (Highway 2)

11.5 miles; +1,266 ft. elevation gain; 45.5 mi. cumulative

 

 

“8 Miles of Hell” right out of aid station along CDT buffed/slight dry single track
Continue on CDT through the Limekiln intersection (a beautiful portion of course)
Nice downhill to Aid Station #10 at Hwy 2
Note: a USA Cycling official will be enforcing racer cut-offs at Hwy 2 aid station #10. Those pulling in after 7:00 p.m. will not be allowed to continue, no exceptions.

 

Aid Station #4 to Finish

9.1 miles; +1,344 ft.; 54.6 mi. cumulative

 

 

Final significant climb (after Beaver Ponds trail junct.) Stay on CDT
Buff single track through boulders and woods
Descent to I-90 intersection-should start hearing car noise
Right turn on concrete, over the overpass and into the finish line

 

Downloads

Butte 50 Course - FIT

Butte 50 Course - GPX

Butte 50 Course - KML

 

 

 

How long is each course, and how much elevation is gained/lost?

100-mile race is 104.4 miles and over 16,000 feet (Ō.) of climbing.
50-mile race is 54.6 miles and over 8,500 Ō. of climbing.
Sorini 25 is 29 miles and around 4,000 Ō. of climbing.

 

What are the Cutoff Times?

Cutoff Times are final. If you do not make it to the aid stations by
these times, you will not be allowed to continue. These are set to ensure your safe completion of the race and to be respectful of the volunteers, including aid station volunteers and search
and rescue. NO EXCEPTIONS. ANY RIDER BEING ABUSIVE TO A VOLUNTEER(S) FOR MISSING THEIR CUTOFF TIME WILL NOT BE ALLOWED TO RACE AT THE BUTTE 100/SORINI 25 IN THE FUTURE.

Butte 100 cutoffs:
1. Aid Station 5: 2:00:00 p.m.
2. Aid Station 8: 6:00:00 p.m.
3. Aid Station 9
7:30:00p.m. without a light, or
8:00:00 p.m. with a light. A sufficiently bright bikelight is required to ride at night after 7:30 p.m. to pass Aid Station 9m .If you are unsure if you can make the 7:30 p.m.cutoff time, please feel free to bring a flashlight.

Butte 50 cutoffs:
1. Aid Station 3: 5:00:00 p.m.
2. Aid Station 4: 7:00:00 p.m.

If you do not make the cut-off, you are no longer a part of the race and a ride back to the start/finish will be arranged. If you make the decision to proceed:
You assume your own responsibility.
You are no longer covered under the Butte 100 umbrella and must find your own ride
Back to the start/finish line if you take this risk and proceed.
If you need a rescue, you will need to call Search and Rescue and assume any associated liabilities and/or costs.

 

How do Drop Bags work?

For each drop bag, use a 1-gallon ziplock bag and mark it with your number and aid station. Drop bags will be placed in bins at the racer meeting on Friday, July 18th at 6pm Registration begins at 3:00pm. Each bin will have
an aid station and mile marker to know where you need to place your bag.
Sorini 25 racers: can drop bags for Aid Station 1 and 4
Butte 50-mile racers: can drop bags for Aid Stations 1, 2, 3, and 4.
Butte 100 mile racers in 2025, the following aid stations are at the same location.
1. Aid Stations 1/6
2. Aid Stations 2/7
3. Aid Stations 3/8
4. Aid Stations 4/9

For 100-mile racers, at the racer’s meeting there will be drop bins for Aid Stations 1 through 9.
You may place one drop bag at each aid station.

NOTE: Aid station 5 is for Butte 100 riders only between lap 1 and 2. DO NOT go over the timing mat after the starting loop (mile 4.8).
Only Butte 100 riders will cross the timing mat AFTER completing the first lap (54.6 miles).

 

What should I put in my Drop bags?

Nutrition,
Pickle Juice--we will have some at some of the aid-stations . Electrolytes,
Solid foods (energy bars, waffles, etc.)
Bike maintenance items:
Chain Lube, Tube, CO2 cartridges, etc.
Comfort items:
Sunscreen,
Fresh socks and/or shorts
Chamois cream,
Sunglass wipes,
Advil, other?
Please note that aid station bags will be outside in the elements and may get hot/cold/wet/etc.
As such, please do not include anything that may spoil before you are able to use it (i.e., pre-
mixed drinks, fruits, vegetables, etc.) unless you have placed them in an appropriate cool and/or protective container

 

What kind of tires should I use?

Decomposed granite with sandy areas in the beginning of the course and on the Basin Creek climb.
After Basin Creek, the course gets rocky and technical. A good fast rolling, high volume tire is a great option. Tires similar to Maxxis Rekon, Rekon Race, Ardent, and Aspen (risking punctures). Schwalbe Nobby Nic, Wicked Will, Racing Ralph. Vittoria Aggaro, Mezcal

 

What will be available at the aid stations?

All Aid stations will have water for riders and will be double stocked (for the two laps) with HAMMER NUTRITION, Coca-Cola (aid station 2,3,7,8), Pickle Juice, and some fruit.

In addition, two new water stations will be located between Aid Stations 2 and 3 (at the top of Basin Creek climb) and Aid Stations 7 and 8 (where the CDT crosses Lime Kiln Road). These new
water stations will only include water.

 

Looking for a place to sleep while competing in the Butte 100 mountain bike races? The Hampton Inn is one of our main sponsors and below that are a few other places you can check out!

 

                   

 

Copper King Hotel: Racers and Sponsors of the Butte 100 may make reservations beginning April 1st by requesting the Butte 100 rate.
The rate is $139 per night for single or double occupancy and includes a full hot breakfast buffet for each guest.

 

Comfort Inn
 
The Miners Hotel
 
Iron Wheel Guest Ranch

 

 

Name: Matt Butterfield

City: Kalispell,MT

Occupation: Bike Shop Mgr.

 

How Long have you been a mountain bike racer? I’ve been racing bikes for the last 15 years.

 

Besides the Butte 100, what are some of the other events you compete in: I’m a fan of all types of mountain bike racing. I try to race at least one hundred miler, one 24hr solo, and one mountain bike stage race a season as well as all the short xc races I can find (within a reasonable driving distance)

 

What got you interested in Mtb racing? Montana is what got me interested in mountain biking. What better way to explore the most amazing place on earth then by mountain bike?

 

What positive effects has competing had on other aspects of your life: It’s kept me from getting fat, ha ha! It has also introduced me to great people who all share the same passion for the outdoors and healthy active living.

 

How many hours a week do you train? I usually average 12-15 hours on the bike and cross training. Leading up to Butte I’ll try and get a few 20hr weeks under my belt. Finding the time is a challenge but if you’re driven there’s alway a way to get out and grab a few hours here and there on the bike.

 

What advice would you give to this year’s Butte 100 racers? My best advice – train. Get out and do some long rides in the months leading up to Butte. Saddle time is money in the bank and the best way to condition yourself for race day.

 

Any other comments you’d like to make? Sweet and sour, that’s how I feel about the Butte. It’s a love hate relationship but it’s one that will stay with you for a life time and that’s quality right there.

 

*The Butte 100 is happy to share any info or pictures that we have for press purposes, please contact us: butte100@gmail.com

 

2017

Steve White drone footage 50 mile start: 50 mile start video

 

2016

Montana Standard: Sorini buys Butte 100
Montana Standard: Mountain bike race favorites

 

2015

Montana Standard: Staying Power
Montana Standard: Calgary rider churns out close win in Butte 100

 

2014

Bike Magazine: Heavy Pedal Tour

 

2013

DirtRag Magazine: Rider’s Write Race Recap
MT Standard: Butte 100 Mountain Bike Race: Record repeats as Juarez, Curry defend 100-mile crowns
Cycling Utah: Tinker Juarez and Lisa Curry Win Butte 100

2013 Butte 100 results press release
ButteSports.com: Riders Gearing up for the Butte 100
MT Standard: Butte Cashes In: Bike Race Boosts Mining City Commerce
MT Standard: Pro, Local riders taking on Butte 100 Today
Montana Standard: Butte 100 bike race sells out in record time

 

2012

Helena Independent Record: Easy Rider
MT Standard: Riders in Butte 100 appreciative of volunteers
Mountain Flyer Magazine: High Pressure and Fast Lines: Tinker Juarez Flies at the Butte 100
Cycling Utah: Tinker Juarez Repeats Win at 2012 Butte 100
Tinker reclaims Butte 100 title: MT Standard & Helena Independent Record
Cyclingnews.com: Butte 100 Results
Montana Standard: Ready to Roll - Riders Gear Up For Butte 100
Cyclingnews.com: Juarez to defend title at this year’s Butte 100
Montana Standard: Butte 100 field fills up
Interview with Tinker Juarez about endurance MTB racing at W24C
2012 Butte 100 Pre-race Press Release

 

2011

Montana Standard: Butte 100 Looking At Changes
Cyclingnews: Butte 100 Overcomes Growing Pains
Montana Standard: Butte 100 draws record number of riders
2011 Butte 100 Race Press Release

 

2007

Montana Standard: 100-mile Bike Race Saturday

 

2018 Race Results

 

2017 Race Results

Kings of the Mountain: 100-Loring Mason Gere; 50-Jessie Myers; 25-Brandon Bradley
Queens of the Mountain: 100-Ivy Pedersen; 50-Amber Steed; 25-Carly Holman

 

2016 Race Results

Kings of the Mountain: 100-Spener Johnson; 50-Brian Heit
Queens of the Mountain: 100-Karin Carestia; 50-Lizzy Adams

 

2015 Race Results

Kings of the Mountain: 100-Matt Butterfield; 50- Zach Tondre
Queens of the Mountain: 100-Ali Wilson; 50-Amber Steed
500 Mile Club inductees: Ben Parsons, Peter Lambros
Growler: David Perkins

 

2014 Race Results

Kings of the Mountain: 100-Ben Parsons; 50-Justin Doll
Queens of the Mountain: 100- Jennifer Schulz; 50-Lauren Kuennen
500 Mile Club inductee: Mike Borduin
Growler: Brian Thompson

 

2013 Race Results

Kings of the Mountain: 100-Tinker Juarez; 50-Justin Doll
Queens of the Mountain: 100 Lisa Curry; 50-Ivy Pederson
500 Mile Club inductee: Rich Shattuck
Growler: Jo Van Cutsem

 

2012 Race Results

Kings of the Mountain: 100-Tinker Juarez; 50-Adam Jensen
Queens of the Mountain: 100-Lisa Curry; 50-Heidi Gaskill
Growler Award: Andrea Stanley
500 Mile Club inductee: Bill Martin

 

2011 Race Results

Growler Award: Murray Warhank

 

2010 Race Results

 

2009 Race Results

 

2008 Race Results

 

2007 Race Results

 

*all results prior to 2014 from usacycling.org*

 

 

Name: Peter Lambros

500 Mile Class: 2015

City: Missoula, MT

Occupation: Caffe Dolce / Real Estate

 

How Long have you been a mountain bike racer?  Five Years

 

What got you interested in mtb racing? Actually, The Butte 100!  Butte brought together two things I’d become fixated on, distance and climbing.

 

Beside the Butte 100, what are some of the other events you compete
in?  24 Hours Round the Clock, and some local stuff

 

What positive effects has competing had on other aspects of your
life? Health! My path on a bike has literally been my path to rising above a history chronic back/joint issues. My health and mobility are at levels that I could have scarcely imagined earlier in life.  Also, I think the mental fitness that comes from endurance / competition is something to draw upon in demanding roles in life, be it running a business or raising a family. And then there is simply the joy of riding trails, and having the friendships that have come from the racing community.

 

How many hours a week do you train? I do something 4-5 days a week for an hour or two. I’m lucky to have good climbs out my back door. In the months leading up to an event, I try to work in a distance day (5-10 hrs) in weeks that I can. It doesn’t all fit! But like everyone–it’s being deliberate about priorities, and having a spouse that puts up with me.

 

          

 

What advice would you give to this year’s Butte 100 racers? Training: Find the longest hardest climbs you can and do them over and over. Racing: As told to me by friend an mentor Kiefer Hahn: 1. Focus on interim goals (i.e. the next aid stop), 2. Look up, take in the beauty, and enjoy the day, 3. Say Hi to other racers and volunteers, and 4. Stay hydrated

 

Any other comments you’d like to make? I saw a hand-painted sign on a tree during last year’s Butte 100 on one of the soul-searching, late-in-the-day climbs that said “You Could Be Golfing”.  That cracked me up.

 

 

There will be cash prizes for the overall top three men's and women's finishers in the 100 mile race. They are broken down as follows:

1st $1,000
2nd $500
3rd $250

Top three male and female 100-mile finishers also receive comp entry to the following year's event.

 

Additional podium awards to the following (all distances):

Juniors (19 and under) – Top 3 male/female
Masters (age 50+) – Top 3 male/female
Singlespeed – Top 3 male/female
Overall (includes masters and juniors) – Top 5 male/female

 

Download the 2025 Race Bible here.

 

 

Finishers & Non-Finishers

All participants whether succesfully finishing, droping out or failing to start after obtaining a bib number, we be required to check out at the finish area. Participants will then receive their jersey and finishers mug. 25 milers do not get a mug and receive a dry-fit shirt instead of a jersey.

 

Awards & Raffle

Classes

Overall – 100 & 50 & 25 Mile – Top 3 male/female
Single-speed  – 100 & 50 & 25 Mile – Top 3 male/female
Masters (age 50+) – 100 & 50 & 25 Mile – Top 3 male/female
Juniors (19 and U) – 100 & 50 & 25 Mile – Top 3 male/female

 
Other Awards

King/Queen of the Mountain: the first man and woman for each event to the top of the Basin Creek Climb receive a Coca-Cola engraved Copper Mug.
Growler Award – the very last racer to finish within the time limit is honored with a gift
All finishing 50/100 racers will be handed a Butte 50/100 finishers mug as they finish
Raffle items will be selected according to race numbers; must be present to win.

 

Packet Pick-up & Mandatory Racer Meeting

Clarion Copper King Hotel and Convention Center, 4655 Harrison Avenue, Butte
Packet pick-up will NOT take place during the 6 p.m. race meeting but will resume after meetings conclude
Mandatory racers meeting, Friday, at 6 p.m. at MAC
All racers must be present to pick up racer packet, sign event participation waiver, and be informed of any last-minute course information, safety protocol, and drop bag delivery
The Butte 100 is not responsible for drop bags provided to the race after packet pick-up is concluded (e.g., race day delivery)
Unfortunately it is not an option to have a friend pick up your packet because they cannot sign your waiver; ID required at packet pick-up.

 

Aid Station Drop Bags

The Butte 100 is a non-supported, wilderness race and the use of racer drop bags is strongly encouraged-race supplies other than water and Hammer Heed should be considered supplemental
Racers are allowed one 1-gallon zip-lock bag per aid station
Bags must be in the possession of the race no later than 9 p.m. on Friday, July 25, to guarantee delivery to the proper aid station
Markers will be provided at packet pick-up to label drop bags with your racer number. Other recognizable designing/labeling is encouraged to help aid station organization and efficiency
Note: Mechanical support is the responsibility of the racer

 

Course Marking

Markings will be ribbon tied to trees and other obvious locations to the racers. They will consist of yellow/red Butte 100 flagging (similar to ‘caution tape’) and 8”x 8” yellow arrows staked on racer’s right. We strive to mark ‘reassurance’ flags every 300 yds to 1/2 mile along course.

 

Cut-off Time

Aid Station #6 100 Mile racers only – 1:00 pm
Aid Station #10 All racers – 7:00 p.m.
Racers that drop must either arrange a ride, or patiently wait until drop shuttle arrives. Only full or near-full car loads will be transported back to the start/finish
Every dropped racer MUST notify race volunteer/timing booth at the finish line immediately upon arrival and return their timing chips.

 

Drop Bag Pick-up

Aid station volunteers will deliver all contents back to the Start/Finish area as soon as they are dismissed from the course

 

Racer Safety

Racer safety is of the utmost importance; however, race personnel can’t be everywhere at all times. It is imperative that everyone look after each other throughout race day. It is the racer’s responsibility to report incidences immediately to race.
A minimum of one ambulance is on call at the start/finish area throughout the race
Immediately report any odd/suspicious looking behavior before, during, and most importantly after the race to any volunteer, ambulance crew, or USFS law enforcement
In case of any emergency, the entire course receives some degree of cell phone coverage and all aid stations have phones to call emergency personnel

 

CDT Policy

Racer registration indicates your consent to follow the established Continental Divide Trail Policy outlined by the USFS: “Bicycle use may be allowed on the CDNST (16 U.S.C. 1246(c)) if the use is consistent with the applicable land and resource management plan and will not substantially interfere with the nature and purposes of the CDNST.”

 

Fire Policy

The Butte 100 will commence rain, snow, or shine. In the event that an outside influence creates any difficulty, organizers will make every effort to provide an alternate course if possible. Cancellation is an extreme and very last option. There will be no refunds or carryover of registration fees or entry positions in the event of a race cancellation. Organizers will mail all contents of the swag bags and the race jerseys to all registered participants in a timely manner.

 

Race Policy

Racers must complete the race on the same bike
Drop handlebars and/or cross-bikes are not permitted
All racers must compete and follow the rules in the race of which they are registered. Failure to do so will result in a DQ.

 

Packet Pickup Timeline

Friday, July 17th 

2:00-700 p.m. Racer Packet Pick-up
Butte Civic Center-Annex  East Side of Building 
*There will be NO Pick-up taking place during the 6 p.m. racer meeting but will resume after the meeting for those arriving late

6:00 p.m. All Racer’s Mandatory Meeting
(last-minute course info, safety hazards, and race rules will be discussed)

 

Race Day Timeline

Saturday, July 18th

5:45 a.m. 100-mile race roll-call: Starting Line
6:00 a.m. 100-mile race start

6:45 a.m. 50-mile race roll-call: Starting Line
7:00 a.m. 50-mile race start

7:45 a.m. 25-mile roll-call: Starting Line
8:00am 25-mile race start

2:00 p.m. Live music, food, and drink available

5-6:30 p.m. 25-mile race & 50-mile Award Ceremony & Raffle at race start/finish.

7:00 p.m. 100-mile Award Ceremony & Raffle at race start/finish

 

 

 

First Come/First Served

We are no longer using the lottery system. Be ready to sign up when registration opens!

 

Waiting List

The waiting list is first come first served. Those racers unsuccessful in gaining initial entry will be automatically entered into the waiting list. When a slot opens up for a waitlist registrant, you have two days to complete your registration before you are removed. Racers will be contacted by email as openings are reported.

 

Cancellations/Refunds

Registration fees for The Butte 100 Races are NON-REFUNDABLE. This includes each race distance. The Butte 100, 50, & Sorini 25.

 

Transfers

All races are non-transferable. between individuals & between race distances. Race entries are not transferable from one person/participant to another person/participant. Sale, trade and/or transfer of Butte 100 race registration is strictly prohibited and will result in the disqualification of offenders from participating at future Butte 100 Races. Anyone caught attempting to sell or transfer their race registration to another person/participant, will have said registration canceled and/or revoked, be disqualified, and be removed from the race without refund.

 

Deferrals

If you can’t race after registering, you have the opportunity to defer your race registration for the next year for a $20 dollar deferral fee. Deferrals will not be accepted within 35 days of the event. Please note: if you choose to defer to the Butte 100 or Butte 50 up from Sorini 25 or up from 50 to 100 race you will have to pay the difference in race fees. You will not receive a refund if you defer to a lower cost event from a higher cost event. Also, in the event that race fees increase, you may have to pay the difference from the previous year to current year. Your deferral can only be used for the following year. You will have the opportunity to register early the following race year. However, if you wait past the window of early registration and the race fills, then you will have to use your deferral on the waitlist and will not be guaranteed entry.

 

View interactive course map and elevation profile

 

 

(2017) NEW SORINI 25 has been approved by USFS Beaverhead and Deer Lodge National Forest & BSB (use of Thompson park is shared by both).

Race Route includes Blacktail, Thompson park, some of the trails the Butte 100 & Butte 50 follow on the South Loop.

The Butte 100 Races thanks USFS Dave Sabo & Jocelyn Dodge and BSB Parks, JP Gallagher.

 

Downloads

Sorini 25 Course - FIT

Sorini 25 Course - GPX

Sorini 25 Course - KML

 

 

Click here to view a map of the start/finish area

 

Parking

All parking will use the undeveloped grass parking area 100 yards from the Interstate. We ask racers to avoid using the developed parking area, about 200 yards north of the interstate, as that area is reserved for race staging. Pit toilets are available at the developed lot.

 

Race Staging

Located adjacent to the start/finish line and towards the front of the developed lot, this area will house aid station #6, day of the race festivities, timing station, food and vendors carts, and award ceremonies.

 

Camping

Camping is permitted in the grass parking lot. Those arriving early, please park to the far end of the lot to allow for the race day rush. People with campers, we ask that you head less than 1 mile past the start/finish area to a large grassy meadow (will be on your right) where you can park your vehicles and camp. There are many intermittent camping spots along the road heading north towards Delmoe Lake. All camping is primitive–without facilities, particularly a water source–and there will be several outhouses and a pit toilet available at the start/finish.

 

 

DRIVING DIRECTIONS

 

From The North

Take I-15 South to Butte
Exit onto I-90 East (towards Bozeman)
Travel East for 6 miles to exit #233 (Homestake)
Turn left at end of offramp and travel for 0.3 miles, race staging is on right

 

From the East

Travel West on I-90 to exit #223 (Homestake)
Turn right at end of offramp, race staging is to the right.
From the SouthTake I-15 North/I-90 East (towards Butte) and continue eastbound on I-90 for 14 miles.
Take exit #223 (Homestake)
Turn left at end of offramp and travel for 0.3 miles, race staging is on right

 

From the West

Travel East on I-90 to exit #223 (Homestake)
Turn left at end of offramp and travel for 0.3 miles, race staging is on right

Volunteer today!
Please contact

StephanieSorini@butte100.com

 

The Butte 100’s Neon Army work tirelessly to make the race what it is-and what it can be. We are fortunate to have an incredible group of people lending a hand in the numerous areas needed to put on a world-class athletic event. It is you, neon-clad warriors, that truly embody the spirit of why the Butte 100 exists!

The big areas of need are race preparation (packet stuffing, registration, course marking) and race day itself (course marshals, crossing guards, aid stations, vendors). Volunteer job descriptions and expectations are listed under the contact form.

 

All volunteers receive:

- An official Neon Army  t-shirt
- Entry into the volunteer raffle to win a Specialized Mountain bike
- Food and beverage at the start/finish
- In 2-3 weeks following the race, when all the dust settles, there will be an informal volunteer appreciation BBQ in which all Neon Army volunteers are invited

 

Aid Station Volunteers [race day~needed 50-80 volunteers needed]

Teams of 5-8
Transport materials to site of aid station.
Set up canopy and organize supplies 1 hour prior to racers arrival. Make sure there is enough space for bikes and that the water/Heed is as accessible as possible for racers.
Arrange drop bags in numerical order. This expedites the process of grabbing the drop bag as the racer is filling up their water bottle.
Once a drop bag has been used. Put that bag in the drop bag bins for return to the start finish for racers to pick up.
1-2 people should be in charge of drop bags. One to call out the numbers. The second to grab the bags and get them to the racers in an expedited manner.
Greet, cheer on, and assist racers as needed. (Be able to sense what they need without getting in the racers way).
Make sure you are constantly opening water bottles so that racers can access them as quickly as possible. Keep an eye on the Heed and snacks to keep them as full as possible. Offer to fill water bottles with Heed for the racers.
Set up one garbage bag for recycling water bottles and a one for garbage.
Record racers numbers as they pass through the aid station. This is accomplished best when two individuals are doing this task. One will read the number out loud and the other will check that racer number off the list (found in aid station information binder). Numbers are to be called back to the start/finish area when there is a break in the racers passing through.
Leave no trace. Tear down, clean up, and return all items to the start finish after you have been released from the race organizer that all racers have passed through your aid station.
Make your aid station memorable. Have a theme, music, crazy costumes…make it unique. Make sure to bring yourself snacks, lunch, beverages, and a charged cell phone.
ENCOURAGE, ENCOURAGE, ENCOURAGE…your energy makes all the difference for the racers.

 

Course Marshal [race day~10-15 volunteers needed]

1-2 people
Go to designated location on race course.
These are typically areas such as: a pre-designated fork in the road, questionable turn, etc.
Your job is to direct the racers on the correct path.
Encourage and support the racers as they pass through.

 

Crossing Guard [race day~8-15 volunteers needed]

2-3 people
You will be stationed where the race course crosses a highway or roadway.
Your job is to be alert for incoming racers as well as oncoming traffic.
You will go onto the road way to slow and stop traffic for racers to pass through.
You will have a stop sign to hold traffic.
There will be bike on roadway signs in both directions so traffic is aware of your presence.
Safety first.
Encourage racers as they ride by.

 

Course Sweepers [race day ~2-3 volunteers needed]

Ride from aid station 9-10
Ride from aid station 10-start finish.
Head lamp, cell phone, helmet, and bike needed.
Make sure all racers have made it to the end. Do not pass any racers, follow the last racer and encourage them to the end.
Call in with any medical issues/concerns to start/finish area.

 

Start/Finish [race day ~10-20 volunteers needed]

Morning set-up; night tear-down
Merchandise
finisher mug hand out
Award ceremony: set-up, organization of medals and raffle productsAid station drop boxes organization
Garbage duty
Runner (gas will be reimbursed): will drop off extra ice to the aid stations.

 

Food and Beverage Chairperson & Team [race day ~5-8 volunteers needed]

Arrange for delivery, pick-up and storage of food. Assist in contacting food sponsors to make arrangements for pick-up of food, banners etc.
Oversee food set-up and clean up.
Coordinate team of volunteers throughout the race at Start Finish food area
Arrange for staffing of food area as needed. KEEP AREA CLEAN. EMPTY GARBAGE CANS, LEAVE AREA CLEANER THAN WHEN WE ARRIVED
Set up tables and tents with your team
Check with start/ finish volunteers throughout race to see where racers are on course. You will want you team of volunteers and yourself ready when racers arrive at finish.

 

Packet stuffing [pre-race ~4-8 volunteers]

Organize complimentary supplies, jerseys, products, and information into numbered racer packets
Usually takes place on the Tuesday or Wednesday before the race for about 2-3 hours
Registration [pre-race ~8-15 volunteers]
This occurs on Thursday evening from 4-6, and on Friday from 2-9 p.m.
Volunteers will help set up registration area, tables, supplies, and paperwork
One person must accept registration form and mark the racer
One person sells the one-day racer registration through USA Cycling
2-3 people will find and provide the racer’s packet
2-3 people set up and sell race merchandise
There will be 2 preparatory volunteer meetings; we ask that volunteers attend both of these meetings, if possible,  as they determine many of the schedules and responsibilities.

 

One Mandatory volunteer meeting will take place at approximately 8 p.m. on Friday night (Eve of Race). This meeting covers any last minute details, changes, questions and concerns. Those helping with registration will be briefed after the volunteer meeting.

 

 

 

Name: William Martin

500 Mile Class: 2012

City: Bozeman

Occupation: Web Application Programmer, Montana State University –
Auxiliary Services IT

 

How Long have you been a mountain bike racer?  25 years

 

What got you interested in mtb racing? John Tomac’s inability to
defend the world championships in Bromont 92.

 

Beside the Butte 100, what are some of the other events you compete
in?  Lots, check them all out here.

 

What positive effects has competing had on other aspects of your
life? If it were not for mountain biking and racing I would of been a
drug running metal head in upstate NY.

 

How many hours a week do you train? How do you fit it all in? I
don’t, maybe 6 hours if I am lucky, back in the day no less then 30.

 

What advice would you give to this year’s Butte 100 racers? Don’t
assume the course markings will stay put.

 

Any other comments you’d like to make? Sorry to miss out this year (2014)

 

 

DOWNLOAD THE FREE

COMPETITIVE TIMING APP

TO FOLLOW THE BUTTE 100

   

______________________________________________________________________________

To all Butte 100, 50, and Sorini 25 Racers:

Welcome to the 2026 Butte 100 Mountain Bike Race on July 18, 2026!  It is getting close to race day and I just wanted to pass along a few important points along with times and locations for the mandatory racers meeting and drop bag information.  Once again a tremendous amount of work has gone into this great event and I hope each of you have a wonderful and memorable time. 

Here are a few things you need to know:

 

Packet pick-up & mandatory racer meeting, Friday, July 17, 2026

Butte Civic Center-Annex  East Side of Building

·         Packet pick-up will be from 2pm until 7pm.  It will NOT take place during the 6pm race meeting but will resume after the meeting concludes.

·         A mandatory racers meeting will be at 6pm at the Butte Civic Center Annex

·         All racers must be present to pick up racer packet and be informed of any last minute course information, safety protocol, and drop bag delivery.

 

Aid Station Drop Bags

·         All racers in the Butte 100 are non-supported, wilderness races and the use of racer drop bags is strongly encouraged.  Race supplies other than water and Hammer Heed should be considered supplemental.

·         Racers are allowed one 1-gallon zip-lock bag per aid station.

·         Bags must be in the possession of the race no later than 7:00pm on Friday, July 17, to guarantee delivery to the proper aid station.

·         Markers will be provided at packet pick-up to label drop bags with your racer number.  Other recognizable designing/labeling is encouraged to help aid station organizations and efficiency.

 

Cut-off Time/DNF

Cutoff Times are final. If you do not make it to the aid stations by
these times, you will not be allowed to continue. These are set to ensure your safe completion of the race and to be respectful of the volunteers, including aid station volunteers and search
and rescue. NO EXCEPTIONS. ANY RIDER BEING ABUSIVE TO A VOLUNTEER(S) FOR MISSING THEIR CUTOFF TIME WILL NOT BE ALLOWED TO RACE AT THE BUTTE 100/SORINI 25 IN THE
FUTURE.

Butte 100:
1. Aid Station 5: 2:00:00 p.m.
2. Aid Station 8: 6:00:00 p.m.
3. Aid Station 9
7:30:00p.m. without a light, or
8:00:00 p.m. with a light. A sufficiently bright bikelight is required to ride at night after 7:30 p.m. to pass Aid Station 9m .If you are unsure if you can make the 7:30 p.m.cutoff time, please feel free to bring a flashlight.

Butte 50:
1. Aid Station 3: 5:00:00 p.m.
2. Aid Station 4: 7:00:00 p.m.

If you do not make the cut-off, you are no longer a part of the race and a ride back to the start/finish will be arranged. If you make the decision to proceed:
You assume your own responsibility.
You are no longer covered under the Butte 100 umbrella and must find your own ride
Back to the start/finish line if you take this risk and proceed.
If you need a rescue, you will need to call Search and Rescue and assume any associated liabilities and/or costs.

Additional Race Policies

·         Note: Mechanical support is the responsibility of the racer.  No outside individuals including family or team members are allowed to help the individual racer in any way once the race begins.

·         E-bikes are not allowed.

·         Racers must complete the race on the same bike.

·         Drop handlebars and/or cross-bikes are not permitted.

·         All racers must compete and follow the rules in the race of which they are registered.  Failure to do so will result in a DQ.

·         Dogs are strongly discouraged around the start/finish area and on the actual race course.  Any dog in the area must be on a leash for its safety as well as the safety of the racers and other spectators.  PLEASE LEAVE YOUR DOG AT HOME.

 

The 2026 race bible will be on this site prior to the race.  Please like our Butte 100 Mountain Bike Races Facebook page too for additional information.   Remember to download the Butte 100 App.  Please let your family members know as well so they track you during the race. 

If you haven’t made your hotel reservations, please do so at our host hotels, Clarion Copper King Hotel and Convention Center (406) 565-5001 or Comfort Inn of Butte at (406) 494-8850.  If you are looking for additional information on Butte, please check out www.butteelevated.com

We look forward to meeting each of you and working with you to make this race better each year. 

 

Best of luck,

 

Stephanie Sorini

Race Owner 

(406) 490-7632

StephanieSorini@Butte100.com

Sorini 25: Dri-fit T-shirt

Tandem 25: Bike Jersey

Butte 50: Bike Jersey

Tandem 50: Bike Jersey

Butte 100: Bike Jersey

Tandem 100: Bike Jersey