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.

Farmers 5000

Sun, Sep 20 · Wheat Ridge, CO Wheat Ridge

Virtual High School Student and Staff 5K Registration. T-shirt included in registration.Elementary School Student (K- grade 5) 5K Registration. Youth large t shirt included.Adult 5K Registration +4

From $10 Open

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Pikes Peak Marathon

Sun, Sep 20 · Manitou Springs, CO Manitou Springs

Road MarathonHalf Priced Award Entry

From $100 Open Closing Soon

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Fall Equinox

Sun, Sep 20 · Fort Collins, CO Fort Collins

Virtual Virtual 5 Mile5 MileHalf Marathon +1

From $50 Open Closing Soon

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Chile & Frijole Hot to Trot 5K & 10K

Sun, Sep 20 · Pueblo, CO Pueblo

Road 5K Run10K Run

From $35 Open

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CG Adventure Club - Elevation Everest

Wed, Sep 23 · Winter Park, CO Winter Park

All-In Adventure PackageBasic Experience PackageStarter Adventure Package

From $150 Open

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Red Feather Trail Jamboree

Fri, Sep 25 · Red Feather Lakes, CO Red Feather Lakes

Trail Red Feather Trail Jamboree Half MarathonRed Feather Trail Jamboree 50 MileRed Feather Trail Jamboree 50km +1

From $90 Open

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West Line Winder

Sat, Sep 26 · Buena Vista, CO Buena Vista

Trail 50k30k

From $105 Open

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25th Annual Black Canyon Triathlon

Sat, Sep 26 · Montrose, CO Montrose

Triathlon 2-3 Person Family Team RelayYouth Individual Triathlon EntryAdult Individual Triathlon Entry +2

From $20 Open

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Estes Epic

Sat, Sep 26 · Estes Park, CO Estes Park

Trail Heavy Half Marathon50k Bike50k Run +1

From $80 Open

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HRCA Oktoberfest 5K

Sat, Sep 26 · Littleton, CO Littleton

Road 5K Run/Walk

From $40 Open

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Parker Parks and Recreation So Long to Summer 5K/10K

Sat, Sep 26 · Parker, CO Parker

Road 5K10K

From $40 Open

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Sangre de Cristo Trail Festival

Sat, Sep 26 · Westcliffe, CO Westcliffe

Trail 8-Mile27k50k +3

From $40 Open

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Runway 5K - Run for the Angels

Sat, Sep 26 · Broomfield, CO Broomfield

Virtual In-Person Runway 5K - Run or Walk - September 26Virtual Runway 5K - Run, Walk, Fly | September 26 - October 4

From $25 Open

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NIGHT NATION RUN - DENVER

Sat, Sep 26 · Commerce City, CO Commerce City

Road VIP REGISTRATIONSTANDARD REGISTRATIONPREMIUM REGISTRATION

From $35 Open

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OUTLAST COLORADO SPRINGS

Sat, Sep 26 · Colorado Springs, CO Colorado Springs

Trail 6 Hour Challenge

From $90 Open Closing Soon

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

Sat, Sep 26 · 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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Oktoberfest Run 5K/10K/13.1 DENVER/AURORA

Sat, Sep 26 · Centennial, CO Centennial

Virtual Family 1 Mile Fun Run5K RegistrationVirtual Run Registration +3

From $30 Open

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Denver Rotary Club Cycling to Serve 2026

Sat, Sep 26 · Denver, CO Denver

Open

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14er Fest 14K & 5K

Sun, Sep 27 · Buena Vista, CO Buena Vista

Road 5K14K

From $35 Open

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Joy & Justice 5k

Sun, Sep 27 · Timnath, CO Timnath

Virtual Kids 1 mile Fun Run (12 & Under)Joy & Justice 5k WalkVirtual 5k +1

From $15 Open Closing Soon

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Sawatch Ascent

Sun, Sep 27 · Nathrop, CO Nathrop

Ultra 50k

From $129 Open

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Running for Children's Rights to Both Parents - 9 of 50 Half Marathons in 50 States - Colorado

Sun, Sep 27 · Boulder, CO Boulder

Virtual 5K (Virtual)10K (Virtual)1/2 Marathon (In-Person) +1

From $40 Open

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Colorado Coyotes Youth XC Invitational

Sun, Sep 27 · Cenennial, CO Cenennial

Road Ages 8 & Under (born 2017+) - 2Km (1.24 miles)Ages 11&12 - (born 2013-2014) - 3Km (1.86 miles)Ages 9 &10 (born 2015-2014) - 3Km (1.86 miles) +1

From $30 Open

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Emerald Mountain Trail Run

Sat, Oct 3 · Steamboat Springs, CO Steamboat Springs

Road 4 Mile12k

From $25.75 Open

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Colorado Springs Marathon, Half, 5K, and Kids K

Sat, Oct 3 · Colorado Springs, CO Colorado Springs

Virtual Kids KVirtual Kids KVirtual 5K +16

From $0 Open 20 spots left

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I Can 5k

Sat, Oct 3 · Thornton, CO Thornton

Open

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Splashland Triathlon

Sat, Oct 3 · Alamosa, CO Alamosa

Triathlon Individual Triathlon Entry3 Person Team Triathlon Entry2 Person Team Triathlon Entry

From $70 Open

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Lafayette Music Fest -5K - 10K

Sat, Oct 3 · Lafayette, CO Lafayette

Road 5K10K

From $40 Open

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OUTLAST DENVER

Sat, Oct 3 · Littleton, CO Littleton

Trail 6 Hour Challenge

From $90 Open

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HRCA Wildcat Mountain Trail Races

Sat, Oct 3 · Littleton, CO Littleton

Trail 10K10MKid's Race

From $10 Open

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Homecoming 5K - Colorado State University

Sat, Oct 3 · Fort Collins, CO Fort Collins

Virtual Virtual 5KHomecoming 5K5K CSU Alumni +2

From $25 Open

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Spooky Sprint - Denver

Sat, Oct 3 · Littleton, CO Littleton

Virtual 1 Mile5K10K +4

From $20 Open Closing Soon 5 spots left

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Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon

Sat, Oct 3 · Canon City, CO Canon City

Virtual VIRTUAL 5k Run/Walk5K Road Run8 Mile Trail Run +3

From $40 Open

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RMRR October Trophy Series

Sun, Oct 4 · Aurora, CO Aurora

Road 5k8mi

From $10 Open

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Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run

Sun, Oct 4 · Windsor, CO Windsor

Road 1 Mile Fit & Fun Run5K10K +2

From $20 Open

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OTILLO Swimrun Colorado

Sun, Oct 4 · Fort Collins, CO Fort Collins

Triathlon Sprint TeamExperience TeamExperience Solo +3

From $70 Open

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Rubey Rescue Run

Sun, Oct 4 · Aspen, CO Aspen

Trail 1 Mile3.5M Trail Run

From $60.38 Open

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The Long View Marathon

Sat, Oct 10 · Fort Collins, CO Fort Collins

Road The Long View 5kThe Long View Half MarathonThe Long View Marathon

From $35 Open Closing Soon

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

Sat, Oct 10 · 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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Bagel Run 5K/10K/13.1 DENVER/AURORA

Sat, Oct 10 · Centennial, CO Centennial

Virtual Family 1 Mile Fun Run5K RegistrationVirtual Run Registration +3

From $30 Open

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Breckenridge RunFest

Sat, Oct 10 · Breckenridge, CO Breckenridge

Road Kids & Family Mile5K10K +2

From $25 Open Closing Soon

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Dialysis Dash 5K

Sat, Oct 10 · Grand Junction, CO Grand Junction

Road 5K Dialysis Dash Run

From $20 Open

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Westy Half & 5k

Sun, Oct 11 · Westminster, CO Westminster

Road 5kHalf Marathon

From $30 Open Closing Soon

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Durango Marathon

Sun, Oct 11 · Durango, CO Durango

Road Durango Half MarathonDurango MarathonDurango Marathon Weekend 5k

From $20 Open

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Indian Creek Trail Runs

Sat, Oct 17 · Sedalia, CO Sedalia

Trail 5-Mile15-Mile55k +1

From $30 Open

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The Great Trailhead Foot Race 5 & 10 Miler

Sat, Oct 17 · Lakewood, CO Lakewood

Road 5 Miler10 Mile

From $55 Open

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Living Water 5K Fun Run

Sat, Oct 17 · Denver, CO Denver

Road 5K Fun Run

From $30 Open

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Blue Sky Trail Marathon & Half Marathon

Sat, Oct 17 · Fort Collins, CO Fort Collins

Trail Blue Sky Trail Half MarathonBlue Sky Trail Marathon

From $90 Open

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Apex Foundation Trick or Trot 5K & Halloween Hunt

Sat, Oct 24 · Arvada, CO Arvada

Virtual Kids' 1-mile Halloween HuntTrick or Trot 5KTrick or Trot VIRTUAL 5K

From $10 Open

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Race to Cure Sarcoma Denver

Sat, Oct 24 · Denver, CO Denver

Virtual 5K Run or 1 Mile Walk (Untimed) - Child (Ages 6-12)5K Run or 1 Mile Walk (Untimed) - Adult5K Run (Timed) - Child (Ages 6-12) +3

From $10 Open

Register →