Running Races in Colorado — 2026

There are 278 running races in Colorado in 2026 across 77 cities. The next upcoming race is the EDT XC Showdown in Aurora on October 11. Popular distances include 5K races, half marathons, ultras.

Breckenridge RunFest

Sat, Oct 10 · Breckenridge, CO Breckenridge

Road Kids & Family Mile5K10K +2

From $25 Open Closing Soon

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Faith & Blue 5K

Sat, Oct 10 · Fort Morgan, CO Fort Morgan

Open

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Kipling Villas 5K - 2026

Sat, Oct 10 · Littleton, CO Littleton

Road 5K Run

From $15 Open Closing Soon

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ASDAsh 5K to Beat Tooth Decay

Sat, Oct 10 · Aurora, CO Aurora

Road ASDAsh 5K to Beat Tooth Decay

From $30 Open Closing Soon

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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 Closing Soon

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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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Dialysis Dash 5K- Canceled

Sat, Oct 10 · Grand Junction, CO Grand Junction

Road 5K Dialysis Dash Run

From $20 Open

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Manitou 5K

Sat, Oct 10 · Manitou Springs, CO Manitou Springs

Road Manitou 5K 18 and underManitou 5K

From $25 Open Closing Soon

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Boulder XC Series Meet 1

Sat, Oct 10 · Boulder, CO Boulder

Road 1K XC - 10 Years & Under3K XC - 16 Years & Under5K XC - Open

From $10 Open Closing Soon

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Durango Marathon

Sun, Oct 11 · Durango, CO Durango

Road Durango Marathon Weekend 5kDurango Half MarathonDurango Marathon

From $20 Open Closing Soon

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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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The Moony Pride 5k

Sun, Oct 11 · Fort Collins, CO Fort Collins

Open Closing Soon

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EDT XC Showdown

Sun, Oct 11 · Aurora, CO Aurora

Road 8&U Boys/Girls 2kCommunity/Coaches 3K11/12 Boys/Girls 3k +2

From $25 Open Closing Soon

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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 Closing Soon

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Kitty Beanz Cat 5k

Sun, Oct 11 · Aurora, CO Aurora

Road Kitty Beanz Cat 5k

From $35 Open Closing Soon

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Living Water 5K and Family Fun Walk/Jog

Sat, Oct 17 · Denver, CO Denver

Road Living Water 1 Mile Fun Walk / JogLiving Water 5k Run / Walk

From $20 Open Closing Soon

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A2A Hero Run/Walk 5K

Sat, Oct 17 · Pueblo, CO Pueblo

Road A2A Hero Run/Walk 5K

From $20 Open Closing Soon

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Running Scared 5K/13K - Denver

Sat, Oct 17 · Littleton, CO Littleton

Virtual Scaredy Cat 5K-No ShirtVirtual Scaredy Cat 5KScaredy Cat 5K +5

From $30 Open Closing Soon

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Longmonster Dash 5k

Sat, Oct 17 · Longmont, CO Longmont

Road Longmonster Dash 5k

From $40 Open Closing Soon

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Chili Chase

Sat, Oct 17 · Durango, CO Durango

Trail Chili Chase

From $40 Open Closing Soon 49 spots left

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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 Closing Soon

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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 Closing Soon

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Indian Creek Trail Runs

Sat, Oct 17 · Sedalia, CO Sedalia

Trail 5-Mile15-Mile55k +1

From $30 Open Closing Soon

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Hyrox Sim

Sat, Oct 17 · Frederick, CO Frederick

Full Hyrox Sim (Individual)Full Hyrox Sim (Teams of 2)Half Hyrox Sim Individual +5

From $45 Open Closing Soon

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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 Closing Soon

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Running Scared 5K/13K - Colorado Springs

Sun, Oct 18 · Colorado Springs, CO Colorado Springs

Virtual Virtual Scaredy Cat 5KScaredy Cat 5K-No ShirtScaredy Cat 5K +5

From $30 Open Closing Soon

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FCRC at Open Streets

Sun, Oct 18 · Fort Collins, CO Fort Collins

Open Closing Soon

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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 Closing Soon

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Fall Harvest Kids Duathlon

Sun, Oct 18 · Colorado Springs, CO Colorado Springs

Triathlon Kids Duathlon

From $40 Open Closing Soon 59 spots left

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

Sun, Oct 18 · Palmer Lake, CO Palmer Lake

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

From $15 Open Closing Soon

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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 Closing Soon

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Fall Skyline Traverse

Sat, Oct 24 · Boulder, CO Boulder

Road Fall Skyline Traverse

From $25 Open Closing Soon 100 spots left

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Zedikiah Scholarship 5K

Sat, Oct 24 · Denver, CO Denver

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) - Adult +3

From $10 Open Closing Soon

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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 Closing Soon

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McGraw Memorial Park "Quick Draw @ McGraw" 2.1 & 12.6 Mile Trail Races

Sat, Oct 24 · Bailey, CO Bailey

Trail 2 Mile Trail Run2 Mile *VIRTUAL* Trail Run/ Walk2 Mile Trail Walk or Walk/Run +1

From $25 Open Closing Soon

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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 Closing Soon

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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 Closing Soon 74 spots left

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Paws for Life Fun Run/Walk 5K - Sponsored by Imperial Memorial Gardens

Sat, Oct 24 · Pueblo, CO Pueblo

Open Closing Soon

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Hoofin' It Through the Hollows 5K

Sat, Oct 24 · Centennial, CO Centennial

Road 5K

From $15 Open Closing Soon

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Ghosts and Goblins 5K/10K

Sun, Oct 25 · Denver, CO Denver

Road Virtual Race5K10K

From $30 Open Closing Soon

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Fleet Feet Colorado Springs Halloween Fun Run

Fri, Oct 30 · Colorado Springs, CO Colorado Springs

Open

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

Sat, Oct 31 · Centennial, CO Centennial

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

From $30 Open

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Halloween Fun 5k

Sat, Oct 31 · Steamboat Springs, CO Steamboat Springs

Road Fun 5K

From $25.75 Open

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Turkey Trot

Sat, Oct 31 · Center, CO Center

Virtual 2027 Turkey Trot2026 Turkey Trot VirtualPie Eating Contest!

From $5 Open

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Colleen De Reuck XC Classic

Sat, Oct 31 · Boulder, CO Boulder

Road 1K XC - 10 Years & Under3K XC - 16 Years & Under5K XC - Open

From $15 Open

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Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA

Sat, Oct 31 · Centennial, CO Centennial

Virtual Family 1 Mile Fun Run5K RegistrationVirtual Run Registration +3

From $30 Open

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Halloween 5K Fundraiser!

Sat, Oct 31 · Grand Junction, CO Grand Junction

Road 5K Run

From $0 Open

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Spooky Sprint - Colorado Springs

Sat, Oct 31 · Colorado Springs, CO Colorado Springs

Virtual 5k10KHalf Marathon +7

From $17 Open Closing Soon 5 spots left

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I Ain't Scared (of 5k)

Sat, Oct 31 · Thornton, CO Thornton

Road 5k

From $29 Open Closing Soon

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