All-Out Fall Fest

Saturday, September 19, 2026 • Westminster, CO
Registration Open
Register Now — From $25.00

When is All-Out Fall Fest?

All-Out Fall Fest takes place on Saturday, September 19, 2026 in Westminster, CO.

What distances does All-Out Fall Fest offer?

All-Out Fall Fest offers 6 events: 5K, VIRTUAL 5K, 10K, VIRTUAL 10K, Half Marathon, VIRTUAL Half Marathon.

Event Distance Price
5K 5.0 km $30.00 Register
VIRTUAL 5K 5.0 km $25.00 Register
10K 10.0 km $40.00 Register
VIRTUAL 10K 10.0 km $30.00 Register
Half Marathon 13.1 mi $60.00 Register
VIRTUAL Half Marathon 13.1 mi $40.00 Register

How much does All-Out Fall Fest cost?

Registration for All-Out Fall Fest starts at $25.00. Prices vary by event distance.

Where is All-Out Fall Fest held?

All-Out Fall Fest is held in Westminster, CO at 10170 Church Ranch Way.

About All-Out Fall Fest

One of Colorado's favorite trails meets one of its most glorious parks at our 9th annual Fallfest! As courses wind southwest along Big Dry Creek Trail, the remarkable sight of Standley Lake with the Flatirons on the horizon will come into view. Its Endless Series sidekick in September is Beat the Heat.

Course details

Church Ranch Office Park
10170 Church Ranch Wy, Westminster, CO 80021

5K course

(23% asphalt/77% concrete)
Download/elevation profile
5K athletes will leave the office parking lot to head west on Big Dry Creek Trail for 1.55 miles. After turning around, return the way they came on this out & back course. 2 opportunities to fuel up (+2 toilets).
Male record: Will Lear, 2021 Fallfest 15:56 (5:08)
Female record: Caroline Wool, 2022 Beat the Heat 19:20 (6:14)
Course average: 37:38 (12:08)
Avg. # of athletes: 106

10K course

(27% soft surface/11% asphalt/62% concrete)
Download/elevation profile
10K athletes will start out heading west on Big Dry Creek Trail toward Standley Lake Regional Park. At about 2.3 miles athletes will begin 0.8 miles of the gravel trail & road system within the park. After turning around, return the way they came on this out & back course. 4 opportunities to fuel up (+ 2 toilets).
Male record: Landon Patel, 2024 Dog Days 41:09 (6:37)
Female record: Emily Rizzo, 2024 Dog Days 47:02 (7:34)
Course average:
1:06:31 (10:36)
Avg. # of athletes: 91

Half marathon course

(45% soft surface/5% asphalt/50% concrete)
Download/elevation profile
Half marathon athletes will start out heading west on Big Dry Creek Trail toward Standley Lake Regional Park. At about 2.3 miles athletes will begin 4 miles of the gravel trail & road system within the park, including the spectacular views along a north/south dogleg near the dam, then exit the park to continue west toward the south trailhead and the turnaround. As they return the way they came, athletes will skip the dogleg, return to Big Dry Creek Trail and head straight for the finish. 8 opportunities to fuel up (+4 toilets).
Male record: Jason Zhang, 2024 Beat the Heat 1:27:28 (6:41)
Female record:
Caroline Jaschke, 2024 Dog Days 1:39:01 (7:34)
Course average: 2:21:50 (10:50)
Avg. # of athletes: 126

Aid Stations

Aid stations have Superganix samples on-demand and will feature Gatorade (lemon-lime, orange, or fruit punch) and Gu energy gels in raspberry lemonade

Directions & Parking

Directions: The Church Ranch Office Park is located at 10170 Church Ranch Wy in Westminster, CO. From US36 you'll go southwest on Church Ranch Blvd, then east on 103rd Ave and south on Church Ranch Wy to find the venue on the east side of the street. Click here for a map or to get directions.

Parking: Athletes & spectators will be asked to park in the lots north and east of the office building, or around of the office building across the street. Please do not park at the school, hotels, or bank, on the street, or behind the office building. Please see the parking map below and follow all parking signs & staff direction on race day.

Features & SWAG

♦ RRCA Certified Race Director—Organization you can count on!
With hundreds of events under the belt of our director and a staff with 25+ years experience, your event will run smoothly. (Ha! No pun intended)
♦ Early AND Race Day Packet Pick-Up—For those who like to prep in advance!
But no worries if you wait until race day... we make it quick & easy.
♦ Race Shirts—The one you'll want to wear EVERY day!
Fit specific, of course, and still poly for those moisture wicking properties, but with a touch of cotton for extreme comfiness.
♦ Finisher Medals—Custom molded for all, including the 5K!
With awesome, colorful ribbons... SO fancy!
♦ SPECIAL! Medal Engraving—Remember your day!
Engrave your medal with your finishing time, a special saying, whatever you'd like, at no extra charge!
♦ Brag Tags—For all repeat finishers!
Our little way of saying 'Thanks for making Fallfest a tradition!'
♦ Souvenir Race Bibs—Event specific and personalized!
Personalized for all who register at least 2 weeks in advance... yet another keepsake to remember your day!
♦ Custom Distance Sticker—Share your accomplishment!
Stick 'em on your car, water bottle, or bulletin board proudly!
♦ FREE Race Pics—Unlimited downloads are on us!
Professional photographers at the finish line AND on course... enjoy!
♦ Gear Check—No trips back to the car for our athletes... no need!
Leave it with us... we'll keep an eye on it for you.
♦ Toilets-A-Plenty—3 Units for 500 people? What, are you crazy?
Ever had to run without using a restroom because the lines were too long? Us too... ouch! We provide more than TRIPLE the facilities as other events, plus multiple units on-course for the all distances!
♦ Accurately Measured Courses—Race the distance you trained for!
Not a little more and not a little less... we measure each course no fewer than 3 times before race day and mark them so they're crystal clear.
♦ Medical Support—Nothing is more important than your safety!
Here's hopin' those guys are really bored, but just in case... you'll find our med crew both at the start/finish AND on course. Plus, each and every volunteer you pass knows who to call for help.
♦ Tons of Aid Stations—No need to carry any extra weight!
Not only will both water & electrolytes be handed to you at the finish line, course aid stations are an average of just 1.2 miles apart. And cups at the aid stations, no hassle of running cupless!
♦ Disposable Timing Chips—No hassle at the finish line!
And no fees if you forget to return your timing chip either... we don't need it back.
♦ Electronic Results—No more endless sheets of data to sort through!
All results scroll on easy-to-read computer screens in the expo area during the event and are posted online by the end of the day.
♦ Post-Race Meal—Breakfast burritos, fruit, bagels & chocolate milk for all!
Yup, even if you're dead last... we're not going anywhere until we cheer you in.
♦ 3 Deep Awards—Overall AND Divisions!
Events small enough to stay friendly and personal give you a better chance of landing on the podium!
♦ NEW fun, theme-based costume contest!
Make sure the official photographer snaps your pic and the best theme-based outfit (as determined by the race director) gets a 50% off coupon for a future event!

 

I ran my first half marathon yesterday at your event and I just wanted to say thank you!!! It was the best organized and staffed race I have done… and I’ve done 5K’s and 10K’s across the country. You guys are just awesome!!  ~Michelle
As a part of our first-of-its-kind race that doesn't end, (yes, it goes on and on my friend), run the same distance at back-to-back events to measure your progress on identical Endless Series courses. Prizes may be awarded to those who beat their previous time! More
With about a gazillion reasons why you might not be able to join us on race day, we know you still want to race with your friends & family. Well, we've got your back! More

Prizes

We still have the great 3-deep awards that you love, overall and divisions. The prizes will be a free registration for the distance you participated in. The winners will be randomly selected and notified via email the week after the event. More

Schedule

Thursday, September 12
 4:30p-6:30p Early packet pick-up
Location: Road Runner Sports, 10442 Town Center Dr., Westminster click here for directions
RRS will give $1 to #themarshalleffect for each packet picked up this day!
      
Saturday, September 14
 7:15a Packet pick-up open
  7:50a Half marathon pick-up and registration close
  8:00a Half marathon start
  8:20a 10K pick-up and registration close
  8:30a 10K start/5K pick-up and registration close
  8:40a 5K start
  9:15a 5K awards ceremony
  9:45a 10K/half overall awards ceremony
  10:15a Half marathon division awards ceremony

Note that packet pickup closes 10 minutes before the start of each distance and you must start within 5 minutes of the distance start time (don't be late)!

Swag & Giveaways

5K: Water bottle
VIRTUAL 5K: Water bottle
10K: Water bottle
VIRTUAL 10K: Water bottle
Half Marathon: Water bottle
VIRTUAL Half Marathon: Water bottle
Register for All-Out Fall Fest
From $25.00
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