Running Races in Colorado 2026 | Find & Register

Run for Coffee Lovers 5K/10K/13.1 DENVER/AURORA

Sat, Jul 25 · Centennial, CO Centennial

Virtual Family Fun Run 1 Mile5K RegistrationVirtual Run Registration (5K/10K/13.1) +3

From $30 Open

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Beas Knees Citizens' Race and National High School Trail Championships

Sat, Jul 25 · Salida, CO Salida

Trail Beas Knees Citizens' RaceBoys' National ChampionshipGirls' National Championship

From $25 Open

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The Hero's Journey 5K

Sat, Jul 25 · Aurora, CO Aurora

Virtual Kids Fun Run5K Under 21Virtual 5K +1

From $10 Open

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Living Journeys 2026 Summit Hike

Sat, Jul 25 · Crested Butte, CO Crested Butte

Hike

From $40 Open

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Run for Donuts 5K/10K/13.1 DENVER/AURORA

Sat, Jul 25 · Centennial, CO Centennial

Virtual Family 1 Mile Fun Run5K RegistrationVirtual Run Registration +3

From $30 Open

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2nd Annual Pancreatic Cancer Awareness in Honor of Diana Cantu - 5K Fun Run/Walk

Sat, Jul 25 · Alamosa, CO Alamosa

Road 5k Run/walk - 16 & Under5k Run/walk - 18 & Over

From $18 Open

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Spirit of the West 5K Run/Walk

Sun, Jul 26 · Golden, CO Golden

Road 5K Run/Walk

From $35 Open

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World Championship Pack Burro Race

Sun, Jul 26 · Fairplay, CO Fairplay

Ultra Short Course, approximately 12.3 milesLong Course, 29+ miles

From $70 Open

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Wild West Relay

Fri, Jul 31 · Fort Collins, CO Fort Collins

Wild West Relay - Get Your Ass Over the Pass - Ultra team (4-6 runners)Wild West Relay - Get Your Ass Over the Pass - High School TeamWild West Relay - Get Your Ass Over the Pass - 12 person team (7-12 runners) +1

From $660 Open

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Flying Colors 5K Fun Run/Walk

Sat, Aug 1 · Craig, CO Craig

Road 5K Fun Run/Walk

From $30 Open

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Kennebec Mountain Run

Sat, Aug 1 · Hesperus, CO Hesperus

Trail 15 Mile

From $75 Open Closing Soon

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RunAbilities FUN Walk/Run/Roll

Sat, Aug 1 · Parker, CO Parker

Road 2 Mile Bike Ride2 Mile Walk/Run/Roll

From $25 Open

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12th Annual Run for the Ring

Sat, Aug 1 · Aurora, CO Aurora

Virtual Virtual 5K Run/Walk5K Race - Run/WalkKids Fun Run +1

From $14.5 Open Closing Soon

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Unicorn 5k (South)

Sat, Aug 1 · Highlands Ranch, CO Highlands Ranch

Road 5k Run/Walk3/4 (ish) Mile Saunter

From $13 Open

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Sheep Mountain Trail Runs

Sat, Aug 1 · Fairplay, CO Fairplay

Trail Half Marathon50k50-Mile

From $70 Open

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2026 Rocky Mountain Strength Rendezvous

Sat, Aug 1 · Littleton, CO Littleton

2026 Rocky Mountain Strength Rendezvous

From $75 Open 60 spots left

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Popsicle 5K/10K/Half - Colorado Springs

Sat, Aug 1 · Colorado Springs, CO Colorado Springs

Virtual 5K-No ShirtVirtual 5K5K +6

From $25 Open

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Shootout for Soldiers Colorado

Sat, Aug 1 · Littleton, CO Littleton

Full Field RegistrationTeam RegistrationPlayer Registration with Game Jersey

From $50 Open

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Bound for Boston Marathon & Half Marathon - Denver

Sun, Aug 2 · Denver, CO Denver

Virtual Virtual Half MarathonHalf MarathonMarathon +1

From $25 Open

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Boulder Kids' Tri Camp

Mon, Aug 3 · Boulder, CO Boulder

Triathlon Boulder Kids' Tri Camp

From $200 Open 30 spots left

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Eltuck Valley 5K - Lory Summer Trail Series

Tue, Aug 4 · Fort Collins, CO Fort Collins

Road Eltuck Valley 5k

From $25 Open

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Eldorado Run for the Cure

Thu, Aug 6 · Eldorado Springs, CO Eldorado Springs

Road Eldorado Run for the Cure

From $30 Open

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BRR All-Comers Summer Track & Field Series #5

Thu, Aug 6 · Boulder, CO Boulder

Road 100M200M400M +9

From $20 Open 15 spots left

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Choice City Running Festival

Fri, Aug 7 · Fort Collins, CO Fort Collins

Road Jane Welzel Mountain Avenue MileHuman Race 5kHuman Race 10k +4

From $20 Open Closing Soon

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RMRR August 5km and picnic

Fri, Aug 7 · Centennial, CO Centennial

Road 5k

From $10 Open

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HRCA Splash Mash Dash Kids Triathlon

Sat, Aug 8 · Littleton, CO Littleton

Triathlon Kids Triathlon

From $45 Open Closing Soon

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Eat. Run. Adopt. 10K

Sat, Aug 8 · Berthoud, CO Berthoud

Road 10KCHILD CARE

From $5 Open

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All-Out Runapalooza

Sat, Aug 8 · Arvada, CO Arvada

Virtual VIRTUAL 5K5K10K +3

From $20 Open

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Dog Days of Summer

Sat, Aug 8 · Longmont, CO Longmont

Road Kidz DashDog Days of Summer 3.5 Loop

From $20 Open Closing Soon 25 spots left

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Fort Collins Running Summit

Sat, Aug 8 · Fort Collins, CO Fort Collins

2026 Fort Collins Running Summit

From $80 Open

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Pat's Pony Express

Sat, Aug 8 · Woodland Park, CO Woodland Park

Trail Pat's Pony Express - 8 MilePat's Pony Express - 16 Mile

From $65 Open 75 spots left

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Summer Sizzler- Denver

Sat, Aug 8 · Thornton, CO Thornton

Virtual 1 Mile5k10k +4

From $17 Open 5 spots left

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Arapahoe Warrior 5K

Sat, Aug 8 · Centennial, CO Centennial

Road Warrior 5K

From $25 Open Closing Soon

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Escalante Days 5K

Sat, Aug 8 · Dolores, CO Dolores

Road 5K

From $30 Open

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The Berkeley Circuit

Sun, Aug 9 · Denver, CO Denver

Road The Berkeley Circuit

From $30 Open

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Summer Sizzler- Colorado Springs

Sun, Aug 9 · Colorado Springs, CO Colorado Springs

Virtual 1 Mile5K10K +4

From $17 Open 5 spots left

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The Bullfrog Summer Surge

Sun, Aug 9 · Lakewood, CO Lakewood

Road Bullfrog Hot Lap5K Run (Timed)

From $20 Open Closing Soon

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Leadville Boomdays International Pack Burro Race

Sun, Aug 9 · Leadville, CO Leadville

Road SHORT COURSE: Leadville Boomdays International Pack Burro RaceLONG COURSE: Leadville Boomdays International Pack Burro Race

From $65 Open

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Pancake Stampede 5K

Sun, Aug 9 · Littleton, CO Littleton

Road 5K

From $20 Open

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Into the Hills Eltuck 10k

Tue, Aug 11 · Bellvue, CO Bellvue

Trail Into the Hills Eltuck 10k

From $25 Open

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South Fork Pandemonium

Fri, Aug 14 · South Fork, CO South Fork

Pandemonium-Family StylePandemonium-Main Event

From $30 Open 72 spots left

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Sunrise Stampede

Sat, Aug 15 · Longmont, CO Longmont

Road 1 Mile Fun Run/Walk (all ages)FREE 1 MILE ENTRIES: First 25 SVVSD Students to enter!!!SVVSD Student 5K +2

From $0 Open 25 spots left

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Bagel Run 5K/10K/13.1 DENVER/AURORA

Sat, Aug 15 · Centennial, CO Centennial

Virtual Family Fun Run 1 Mile5K Registration5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open

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CWCS 5K Color Fun Run

Sat, Aug 15 · Montrose, CO Montrose

Road CWCS 5K Color Fun Run

From $40 Open

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Run for PB& J 5K/10K/13.1 DENVER/AURORA

Sat, Aug 15 · Centennial, CO Centennial

Virtual Family 1 Mile Fun RunVirtual Run Registration5K Registration +3

From $30 Open

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The Cheyenne Mountain Run

Sat, Aug 15 · Colorado Springs, CO Colorado Springs

Trail 5K10K25K

From $40 Open

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Frontier Academy Community 5K

Sat, Aug 15 · Greeley, CO Greeley

Road Frontier Academy's 15th Annual 5K

From $25 Open

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Erie Half & 5k

Sun, Aug 16 · Erie, CO Erie

Road 5kHalf Marathon

From $30 Open

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Into the Hills Eltuck 5k

Tue, Aug 18 · Bellvue, CO Bellvue

Trail Into the Hills Eltuck 5k

From $25 Open

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Ram Run

Sat, Aug 22 · Denver, CO Denver

Virtual Ram Run Kids Race (12 and under) 1 mileRam Run - VirtualRam Run 5k Run

From $10 Open

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Running Races in Colorado — 2026

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