Running Races in Colorado — 2026

There are 298 running races in Colorado in 2026 across 90 cities. The next upcoming race is the Raising the Barr in Brighton on September 5. Popular distances include 5K races, half marathons, trail runs.

PRA Miner Gold Rush

Sat, Oct 3 · Broomfield, CO Broomfield

Road 1 Mile Fun Run + Fall Festival5K Run + Fall FestivalFall Festival Only

From $15 Open Closing Soon

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Homecoming 5K - Colorado State University

Sat, Oct 3 · Fort Collins, CO Fort Collins

Virtual 5K CSU StudentVirtual 5KHomecoming 5K +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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Lafayette Music Fest -5K - 10K

Sat, Oct 3 · Lafayette, CO Lafayette

Road 5K10K

From $40 Open Closing Soon

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Ethiopians 5K

Sat, Oct 3 · Aurora, CO Aurora

Road Ethiopians 5K

From $0 Open

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Emerald Mountain Trail Run

Sat, Oct 3 · Steamboat Springs, CO Steamboat Springs

Road 4 Mile12k

From $25.75 Open Closing Soon

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FAMpoint5k

Sat, Oct 3 · Grand Junction, CO Grand Junction

Road FAMpoint5k - The Race for the Rest of Us

From $20 Open

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I Can 5k

Sat, Oct 3 · Thornton, CO Thornton

Open

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HRCA Wildcat Mountain Trail Races

Sat, Oct 3 · Littleton, CO Littleton

Trail 10K10MKid's Race

From $10 Open Closing Soon

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OUTLAST DENVER

Sat, Oct 3 · Littleton, CO Littleton

Trail 6 Hour Challenge

From $90 Open Closing Soon

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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 Closing Soon

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

Sat, Oct 3 · Colorado Springs, CO Colorado Springs

Virtual Virtual Kids KKids K2027 Colorado Springs 5K +16

From $0 Open 20 spots left

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Strides for Sierra 5K run/walk

Sun, Oct 4 · Arvada, CO Arvada

Road 1K Fun RunIndividual 5KFour Pack 5K

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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RMRR October 5k/8mi

Sun, Oct 4 · Aurora, CO Aurora

Road 5k8mi

From $10 Open

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OTILLO Swimrun Colorado

Sun, Oct 4 · Fort Collins, CO Fort Collins

Triathlon Experience SoloExperience TeamSprint 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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Liberty Energy 5K - Benefiting the Bettering Human Lives Foundation

Sun, Oct 4 · Denver, CO Denver

Virtual 5K RaceVirtual 5K RacePost-Race Celebration Pass

From $25 Open

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Kids' Fall Series - Where Kids Run Free!

Sun, Oct 4 · Colorado Springs, CO Colorado Springs

Open

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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 Registration5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open

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Dialysis Dash 5K- Canceled

Sat, Oct 10 · Grand Junction, CO Grand Junction

Road 5K Dialysis Dash Run

From $20 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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Kipling Villas 5K - 2026

Sat, Oct 10 · Littleton, CO Littleton

Road 5K Run

From $15 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

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Footsteps for Families 5k Fun Run & Concert

Sat, Oct 10 · Windsor, CO Windsor

Virtual Footsteps for Families 5k Fun Run-VIRTUAL EVENTFootsteps for Families 5k Fun Run- 12 and Under Youth RegistrationFootsteps for Families 5k Fun Run and Concert

From $20 Open

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Suffer Better 10th Annual Fall Trail Runs

Sat, Oct 10 · Pine, CO Pine

Trail Suffer Better 25KSuffer Better 25K - FishSlappers DivisionSuffer Better 50K +1

From $25 Open 30 spots left

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Manitou 5K

Sat, Oct 10 · Manitou Springs, CO Manitou Springs

Road Manitou 5K 18 and underManitou 5K

From $25 Open

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Breckenridge RunFest

Sat, Oct 10 · Breckenridge, CO Breckenridge

Road Kids & Family Mile5K10K +2

From $25 Open

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Westy Half & 5k

Sun, Oct 11 · Westminster, CO Westminster

Road 5kHalf Marathon

From $30 Open

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The Moony Pride 5k

Sun, Oct 11 · Fort Collins, CO Fort Collins

Open

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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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Your Story Isn't Over 5k/10k/Kids 1-Mile

Sun, Oct 11 · Littleton, CO Littleton

Virtual Your Story Isn't Over Kids RunYour Story Isn't Over Virtual 5kYour Story Isn't Over 5k +1

From $20 Open

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EDT XC Showdown

Sun, Oct 11 · Aurora, CO Aurora

Road 8&U Boys/Girls 2k9/10 Boys/Girls 3k11/12 Boys/Girls 3k +2

From $25 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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Chili Chase

Sat, Oct 17 · Durango, CO Durango

Trail Chili Chase

From $40 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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The Great Pumpkin Haul

Sat, Oct 17 · Fruita, CO Fruita

Road Solo hauler entryCharity entry4 person team- save $5 each! +2

From $0 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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Living Water 5K and Family Fun Run

Sat, Oct 17 · Denver, CO Denver

Road 5K and Family Fun Run

From $30 Open

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Fall Harvest Kids Duathlon

Sun, Oct 18 · Colorado Springs, CO Colorado Springs

Triathlon Kids Duathlon

From $40 Open 50 spots left

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Halloween Hustle for Charity

Sun, Oct 18 · Glenwood Springs, CO Glenwood Springs

Road 1.5K TRICK-OR-TREAT FUN RUN/WALK5.5K FUN RUN/WALK

From $30 Open

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The Palmer Lake .5K (Yes "Point" 5)

Sun, Oct 18 · Palmer Lake, CO Palmer Lake

Road .5k Child (Under 12).5 (yes point 5) K.5k Dog Participant

From $15 Open

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DU Crimson Classic 5K Run/1.5 Mile Walk

Wed, Oct 21 · Denver, CO Denver

Road Volunteer One Hour - Day of Crimson Classic

From $0 Open

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Mancos Cowboy Half Marathon, 5K, and Fun Run

Sat, Oct 24 · Mancos, CO Mancos

Road Mancos 5KMancos Cowboy Half Marathon

From $25 Open

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Hoofin' It Through the Hollows 5K

Sat, Oct 24 · Centennial, CO Centennial

Road 5K

From $15 Open

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Zedikiah Scholarship 5K

Sat, Oct 24 · Denver, CO Denver

Open

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Apex Foundation Trick or Trot 5K & Halloween Hunt Powered by REP Fitness

Sat, Oct 24 · Arvada, CO Arvada

Virtual Kids' 1-mile Halloween Hunt powered by REP FitnessTrick or Trot 5K powered by REP FitnessTrick or Trot VIRTUAL 5K powered by REP Fitness

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) - AdultVirtual - Adult +3

From $10 Open

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YMCA Creepy Crawl 5K presented by Corwin Honda

Sat, Oct 24 · Palmer Lake, CO Palmer Lake

Road Creepy Crawl 5K

From $40 Open

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Ghosts and Goblins 5K/10K

Sun, Oct 25 · Denver, CO Denver

Road 5KVirtual Race10K

From $30 Open

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