Running Races in Colorado 2026 | Find & Register

Heritage Eagles 5K

Sat, Jul 18 · Littleton, CO Littleton

Road Heritage Eagles 5K

From $25 Open Closing Soon

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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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Denver, CO Galloway Training Program

Sat, Jul 18 · Denver, CO Denver

Road New Member - Year-Round TrainingAlumni - Year-Round TrainingAlumni Club - Galloway Member for at least 2 previous years +2

From $91 Open

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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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Hyrox Hybrid Camp

Sat, Jul 18 · FREDERICK, CO FREDERICK

Hyrox Hybrid Class

From $180 Open Closing Soon 30 spots left

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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 Closing Soon

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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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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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Barr Trail Mountain Race

Sun, Jul 19 · Manitou Springs, CO Manitou Springs

Road BTMRAid Station Challenge Sponsor

From $75 Open Closing Soon 16 spots left

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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 Closing Soon

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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 Closing Soon

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BRR All-Comers Summer Track & Field Series #4

Thu, Jul 23 · Boulder, CO Boulder

Road Steeplechase 3k100M200M +11

From $20 Open Closing Soon 15 spots left

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Flyin' Ryan Memorial 5k

Fri, Jul 24 · Loveland, CO Loveland

Road Flyin' Ryan Memorial 5k

From $25 Open Closing Soon

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Never Summer 100km & 60km

Fri, Jul 24 · Walden, CO Walden

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

From $175 Open Closing Soon 20 spots left

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The Hero's Journey 5K

Sat, Jul 25 · Aurora, CO Aurora

Virtual Kids Fun Run5K (21 and older)5K Under 21 +1

From $10 Open Closing Soon

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

Sat, Jul 25 · Centennial, CO Centennial

Virtual Family 1 Mile Fun RunVirtual Run Registration5K Registration +3

From $30 Open Closing Soon

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Beas Knees Citizens' Race and National High School Trail Championships

Sat, Jul 25 · Salida, CO Salida

Trail Boys' National ChampionshipBeas Knees Citizens' RaceGirls' National Championship

From $25 Open Closing Soon

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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 Closing Soon

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Living Journeys 2026 Summit Hike

Sat, Jul 25 · Crested Butte, CO Crested Butte

Hike

From $40 Open Closing Soon

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CEROX + IRON

Sat, Jul 25 · Frederick, CO Frederick

Cerox Iron Teams of 2Cerox IndividualCerox Teams of 2 +1

From $45 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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Christmas 5K/10K/Half Marathon in July Meet Up - Denver

Sat, Jul 25 · Littleton, CO Littleton

Virtual 5K10KHalf Marathon

From $35 Open Closing Soon

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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 Closing Soon

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Spirit of the West 5K Run/Walk

Sun, Jul 26 · Golden, CO Golden

Road 5K Run/Walk

From $35 Open Closing Soon

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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 Closing Soon

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SIC Mile/2 Mile Run or Walk

Sun, Jul 26 · Pueblo, CO Pueblo

Road SIC Mile/2 Mile Run or Walk

From $25 Open Closing Soon

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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 Closing Soon

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12th Annual Run for the Ring

Sat, Aug 1 · Aurora, CO Aurora

Virtual 5K Race - Run/WalkVirtual 5K Run/WalkSleep In +1

From $14.5 Open Closing Soon

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Nielson Challenge

Sat, Aug 1 · Colorado Springs, CO Colorado Springs

Open Closing Soon

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2026 Rocky Mountain Strength Rendezvous

Sat, Aug 1 · Littleton, CO Littleton

2026 Rocky Mountain Strength Rendezvous

From $75 Open Closing Soon 60 spots left

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STEPS TO EMPOWER

Sat, Aug 1 · Colorado Springs, CO Colorado Springs

Virtual VIRTUAL Steps to EmpowerSteps to Empower 1 Mile Walk/RunSteps to Empower 5K Walk/Run

From $25 Open Closing Soon

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Snowshoe Shuffle 5K Run

Sat, Aug 1 · Creede, CO Creede

Road 5K RunSnowshoe Shuffle 5K Walk

From $25 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 Closing Soon

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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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Flying Colors 5K Fun Run/Walk

Sat, Aug 1 · Craig, CO Craig

Road 5K Fun Run/Walk

From $30 Open

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Move with MADD Denver 5K

Sat, Aug 1 · Denver, CO Denver

Road Timed 5KDog 5KUntimed Walk

From $15 Open

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Shootout for Soldiers Colorado

Sat, Aug 1 · Littleton, CO Littleton

Player Registration with Game JerseyTeam RegistrationFull Field Registration

From $50 Open Closing Soon

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RunAbilities FUN Walk/Run/Roll

Sat, Aug 1 · Parker, CO Parker

Road 2 Mile Walk/Run/Roll2 Mile Bike Ride

From $25 Open

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Popsicle 5K/10K/Half - Colorado Springs

Sat, Aug 1 · Colorado Springs, CO Colorado Springs

Virtual Virtual 5K5K-No Shirt5K +6

From $25 Open Closing Soon

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Sheep Mountain Trail Runs

Sat, Aug 1 · Fairplay, CO Fairplay

Trail Half Marathon50k50-Mile

From $70 Open Closing Soon

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Bound for Boston Marathon & Half Marathon - Denver

Sun, Aug 2 · Denver, CO Denver

Virtual Half MarathonVirtual Half MarathonVirtual Marathon +1

From $25 Open Closing Soon

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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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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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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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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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Dog Days of Summer

Sat, Aug 8 · Longmont, CO Longmont

Road Kidz DashDog Days of Summer 3.5 Loop

From $20 Open 25 spots left

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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 Closing Soon 75 spots left

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Escalante Days 5K

Sat, Aug 8 · Dolores, CO Dolores

Road 5K

From $30 Open Closing Soon

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Running Races in Colorado — 2026

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