Running Races in Colorado — 2026

There are 403 running races in Colorado in 2026 across 102 cities. The next upcoming race is the Yampa River Festival 2026 in Steamboat Springs on May 30. Popular distances include 5K races, trail runs, half marathons.

2026 Crested Butte Golden Retriever Registration July 4 Parade

Sat, Jul 4 · Crested Butte, CO Crested Butte

Open

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Red Feather Lakes 3.6 Mile Fun Run

Sat, Jul 4 · Red Feather Lakes, CO Red Feather Lakes

Road Red Feather Lakes 3.6 Mile Fun Run

From $40 Open

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16th Annual Telluride Foundation Rundola: Run for Good

Sat, Jul 4 · Telluride, CO Telluride

Road 2026 Rundola: Run for Good

From $45 Open

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Red, White, and WARRIOR 5K

Sat, Jul 4 · Grand Junction, CO Grand Junction

Road Red, White, and WARRIOR 5KLittle Sparkler Sprint

From $10 Open

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July 4th Run 5K/10K/13.1 DENVER/AURORA

Sat, Jul 4 · Centennial, CO Centennial

Virtual Family Fun Run 1 Mile5K/10K/13.1 Eco-Registration (No Shirt)Virtual Run Registration (5K/10K/13.1) +3

From $30 Open

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Palmer Lake July 4th Fun Run

Sat, Jul 4 · Palmer Lake, CO Palmer Lake

Virtual July 4 Fun Run - VIRTUAL RACE - AdultJuly 4 Fun Run - Elementary Student and YoungerJuly 4 Fun Run - VIRTUAL RACE Elementary Student and Younger +3

From $20 Open Closing Soon

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Rendezvous Run for Independence

Sat, Jul 4 · Winter Park, CO Winter Park

Road Rendezvous Run for Independence 5K Run/Walk

From $40 Open

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Georgetown SUP-Athlon

Sat, Jul 4 · Georgetown, CO Georgetown

Triathlon Georgeotwn SUP-Athlon RelayGeorgeotwn SUP-Athlon

From $85 Open

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Greeley Freedom 5k Walk & Run

Sat, Jul 4 · Greeley, CO Greeley

Road 5k Walk5k Run

From $30 Open

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Run For Your Life 5K

Sat, Jul 4 · Meeker, CO Meeker

Road Run For Your Life 5K

From $20 Open

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Let Freedom Run 5k/10k - Louisville

Sat, Jul 4 · Louisville, CO Louisville

Road 5k10k

From $30 Open

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Sheep Creek Triathlon

Sat, Jul 4 · Antonito, CO Antonito

Triathlon TriathlonShirt Purchase Only

From $20 Open Closing Soon

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Durango Main Avenue Mile

Sat, Jul 4 · Durango, CO Durango

Road Main Avenue Mile

From $15.81 Open

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Let Freedom Run 5k - LONGMONT

Sat, Jul 4 · Longmont, CO Longmont

Road 5k Run/Walk

From $30 Open

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Hahns Peak Vertical Trail Race

Sun, Jul 5 · Clark, CO Clark

Road 8 Mile

From $40 Open Closing Soon

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BRR All-Comers Summer Track & Field Series #3

Thu, Jul 9 · Boulder, CO Boulder

Road 5000m100M200M +10

From $20 Open 15 spots left

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Silverheels Trail Runs

Fri, Jul 10 · Como, CO Como

Trail 10-Mile19-Mile60k +3

From $50 Open

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Grin & Bear It

Sat, Jul 11 · Crested Butte, CO Crested Butte

Road 15 km Out and BackMountain Bike25 km Loop

From $75 Open Closing Soon 75 spots left

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Pagosa Duathlon

Sat, Jul 11 · Pagosa Springs, CO Pagosa Springs

Triathlon Dusty KidsDirty SprintDirty Du

From $15 Open Closing Soon

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Heatwave Half Marathon - Denver

Sat, Jul 11 · Littleton, CO Littleton

Virtual 1 Mile5K10K +5

From $17 Open 5 spots left

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All-Out Dog Days

Sat, Jul 11 · Westminster, CO Westminster

Virtual VIRTUAL 5K5KVIRTUAL 10K +3

From $20 Open

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Paint the Prairie

Sat, Jul 11 · Aurora, CO Aurora

Paint the Prairie Color Run

From $15 Open

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DRMABPsi 1–5K Walk, Run & Roll

Sat, Jul 11 · Denver, CO Denver

Road 1k2kKids Run +3

From $10 Open

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Cookie Chase

Sat, Jul 11 · Denver, CO Denver

Road 5KVirtual 5K

From $30 Open

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Rocky Mountain State Games - Swim / Run

Sun, Jul 12 · Colorado Springs, CO Colorado Springs

Triathlon Swim / Run - 5-8yrsSwim / Run - 9-15yrsSwim / Run - 16+ yrs

From $25 Open

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RMRR July Trophy Series

Sun, Jul 12 · Lakewood, CO Lakewood

Road 2mi

From $10 Open

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Heatwave Half Marathon - Colorado Springs

Sun, Jul 12 · Colorado Springs, CO Colorado Springs

Virtual 1 Mile5 K10 K +5

From $17 Open 5 spots left

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Surf and Turf Triathlon

Sun, Jul 12 · Aurora, CO Aurora

Triathlon Surf and Turf Super Sprint TriathlonSurf and Turf Sprint Triathlon

From $75 Open

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PNAAF 5K Wellness Challenge

Thu, Jul 16 · Colorado Springs, CO Colorado Springs

Virtual PNAAF 5K Wellness ChallengeVirtual 5K

From $35 Open

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High Lonesome 100

Fri, Jul 17 · Nathrop, CO Nathrop

Ultra 100 Miler

From $465 Open

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Audi Power of Four Trail Run

Sat, Jul 18 · Aspen, CO Aspen

Trail 10K Run25K Run50K Run

From $105 Open 75 spots left

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Expedition Maroon Bells

Sat, Jul 18 · Aspen, CO Aspen

Freedom Expedition Leadership TeamFreedom Expedition DepositFreedom Expedition

From $0 Open 6 spots left

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Spring Creek Memorial Trail Run

Sat, Jul 18 · Steamboat Springs, CO Steamboat Springs

Road 5k9.5 Mile

From $25.75 Open Closing Soon 100 spots left

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CU Anschutz Run Club 5K

Sat, Jul 18 · Aurora, CO Aurora

Road 5K without T-Shirt5K with T-Shirt

From $7 Open

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Festival in the Clouds Firefighter 5K, Fun Run and Doggie Dash

Sat, Jul 18 · Alma, CO Alma

Road 5K Fun Run and Doggie Dash5K Fun Run and Doggie Dash - Youth Racer 6-125K Fun Run and Doggie Dash - Youth Racer 5 and Under

From $0 Open

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Summer Splash Prairie Dog Half, 10k, & 5k

Sat, Jul 18 · Castle Rock, CO Castle Rock

Road 5k10kHalf Marathon

From $25 Open Closing Soon

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2026 OCA Colorado 5K Panda Run

Sat, Jul 18 · Denver, CO Denver

Road 2026 OCA Colorado 1K Panda Walk2026 OCA Colorado 5K Panda Run

From $35 Open

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TransRockies Run Charity Bibs

Sat, Jul 18 · Buena Vista, CO Buena Vista

Trail Individual Fundraiser Charity Bib

From $0 Open 3 spots left

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Parker Parks and Recreation Kids' TRY-athlon

Sat, Jul 18 · Parker, CO Parker

Triathlon 8 to 10 years11 to 12 years6 to 7 years

From $35 Open 35 spots left

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Heritage Eagles 5K

Sat, Jul 18 · Littleton, CO Littleton

Road Heritage Eagles 5K

From $25 Open Closing Soon

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One Is Too Many: Veteran Suicide Awareness 5k and Kids Run

Sun, Jul 19 · Greeley, CO Greeley

Road 1 Mile5k run or walk

From $15 Open

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Barr Trail Mountain Race

Sun, Jul 19 · Manitou Springs, CO Manitou Springs

Road Aid Station Challenge SponsorBTMR

From $75 Open 16 spots left

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Clear for Takeoff Virtual 5K

Mon, Jul 20 · Colorado Springs, CO Colorado Springs

Virtual Clear for Takeoff Virtual 5K

From $35 Open

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14er Challenge

Thu, Jul 23 · Buena Vista, CO Buena Vista

14er Challenge 2026

From $249 Open 22 spots left

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BRR All-Comers Summer Track & Field Series #4

Thu, Jul 23 · Boulder, CO Boulder

Road 100M200M400M +10

From $20 Open 15 spots left

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Never Summer 100km & 60km

Fri, Jul 24 · Walden, CO Walden

Ultra Never Summer 60kmNever Summer 100kmThe Double (60km & 100km)

From $175 Open 20 spots left

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Flyin' Ryan Memorial 5k

Fri, Jul 24 · Loveland, CO Loveland

Road Flyin' Ryan Memorial 5k

From $25 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 - 18 & Over5k Run/walk - 16 & Under

From $18 Open

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Beas Knees Citizens' Race and National High School Trail Championships

Sat, Jul 25 · Salida, CO Salida

Trail Girls' National ChampionshipBeas Knees Citizens' RaceBoys' National Championship

From $25 Open Closing Soon

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Aspen Valley Marathon

Sat, Jul 25 · Aspen, CO Aspen

Road Aspen Valley Marathon 5KAspen Valley HALF MarathonAspen Valley Marathon

From $55 Open Closing Soon

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