5K Races in Colorado — 2026

There are 298 5K races in Colorado scheduled for 2026. The next is the Bigfoot Half Marathon in Estes Park on April 25. Colorado 5K races run primarily April.

Severance Glow 5K Run or Walk

Fri, Sep 18 · Severance, CO Severance

Severance Glow 5K

From $30 Open

Register →

Wellington STAR Foundation 5K 10K

Sat, Sep 19 · Wellington, CO Wellington

Stroller or Dog 5K5K RunKids 5K (ages 3-12) +3

From $10 Open

Register →

Miles 4 Madison 5K & 1K

Sat, Sep 19 · Littleton, CO Littleton

1K5KVirtual 5K/1K

From $25 Closed

Register →

All-Out Fall Fest

Sat, Sep 19 · Westminster, CO Westminster

VIRTUAL 5K5KVIRTUAL 10K +3

From $25 Open

Register →

All Hands on Deck The Pirates 5K

Sat, Sep 19 · Colorado Springs, CO Colorado Springs

All Hands on Deck Pirates 5K

From $25 Closed

Register →

Lederhosen Race 2026

Sat, Sep 19 · Red Feather Lakes, CO Red Feather Lakes

Lederhosen Fun Run

From $35 Open

Register →

Denver: Walk With Autism and Resource Fair

Sat, Sep 19 · Denver, CO Denver

Walk with Autism Denver- VirtualWalk with Autism Denver

From $25 Closed

Register →

Beulah Challenge and OverIt Series

Sat, Sep 19 · Beulah, CO Beulah

5K5K - Age 17 & Under10K - Age 17 & Under +3

From $20 Open

Register →

Battle by the Brook

Sat, Sep 19 · Deckers, CO Deckers

Family RaceCompetitive Race

From $89 Open 75 spots left

Register →

Chile & Frijole Hot to Trot 5K/10K

Sun, Sep 20 · Pueblo, CO Pueblo

5K Run10K Run

From $35 Closed

Register →

20th Annual Golden Gallop

Sun, Sep 20 · Golden, CO Golden

5K10K20K Challenge - ONLY 10K completed on race day, remaining 10K done virtually +2

From $25 Open

Register →

Chile & Frijole Hot to Trot 5K & 10K

Sun, Sep 20 · Pueblo, CO Pueblo

5K Run10K Run

From $35 Open

Register →

7th ANNUAL PAUL'S MYSTERY SHIP WALK TO END ALS

Sun, Sep 20 · Castle Rock, CO Castle Rock

7th ANNUAL PAUL'S MYSTERY SHIP WALK TO END ALS

From $45 Open

Register →

Fall Equinox

Sun, Sep 20 · Fort Collins, CO Fort Collins

5 MileVirtual 5 MileHalf Marathon +1

From $50 Open

Register →

Farmers 5000

Sun, Sep 20 · Wheat Ridge, CO Wheat Ridge

High School Student and Staff 5K Registration. T-shirt included in registration.Alumni 5K RegistrationAdult 5K Registration +4

From $10 Open

Register →

Boggy Draw Bear Chase

Fri, Sep 25 · Dolores, CO Dolores

Bear Chase MS GirlsBear Chase MS BoysBear Chase HS Girls +1

Closed

Register →

McGinn Memorial Cross Country Challenge

Sat, Sep 26 · Pagosa Springs, CO Pagosa Springs

MS Girls - Pagosa Springs Cross Country ChallengeMS Boys - Pagosa Springs Cross Country ChallengeHS Girls - Pagosa Springs Cross Country Challenge +1

From $0 Closed

Register →

Oktoberfest Run 5K/10K/13.1 DENVER/AURORA

Sat, Sep 26 · Centennial, CO Centennial

Family 1 Mile Fun Run5K Registration5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open

Register →

NIGHT NATION RUN - DENVER

Sat, Sep 26 · Commerce City, CO Commerce City

STANDARD REGISTRATIONVIP REGISTRATIONPREMIUM REGISTRATION

From $35 Open

Register →

Runway 5K - Run for the Angels

Sat, Sep 26 · Broomfield, CO Broomfield

In-Person Runway 5K - Run or Walk - September 26Virtual Runway 5K - Run, Walk, Fly | September 29 - October 4

From $25 Open

Register →

HRCA Oktoberfest 5K

Sat, Sep 26 · Littleton, CO Littleton

5K Run/Walk

From $40 Open

Register →

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

Sat, Sep 26 · Centennial, CO Centennial

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

From $30 Open

Register →

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

Sat, Sep 26 · Parker, CO Parker

5K10K

From $40 Open 100 spots left

Register →

14er Fest 14K & 5K

Sun, Sep 27 · Buena Vista, CO Buena Vista

5K14K

From $35 Open

Register →

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

Sun, Sep 27 · Boulder, CO Boulder

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

From $40 Open

Register →

Colorado Coyotes Youth XC Invitational

Sun, Sep 27 · Cenennial, CO Cenennial

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

Register →

Joy & Justice 5k

Sun, Sep 27 · Timnath, CO Timnath

Kids 1 mile Fun Run (12 & Under)Virtual 5kJoy & Justice 5k Walk +1

From $15 Open

Register →

Lafayette Music Fest -5K - 10K

Sat, Oct 3 · Lafayette, CO Lafayette

5K10K

From $40 Open Closing Soon

Register →

PRA Miner Gold Rush

Sat, Oct 3 · Broomfield, CO Broomfield

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

From $15 Closed

Register →

Homecoming 5K - Colorado State University

Sat, Oct 3 · Fort Collins, CO Fort Collins

Virtual 5K5K CSU Student5K CSU Alumni +2

From $25 Open

Register →

Spooky Sprint - Denver

Sat, Oct 3 · Denver, CO Denver

1 Mile5K10K +4

From $20 Open 5 spots left

Register →

Emerald Mountain Trail Run

Sat, Oct 3 · Steamboat Springs, CO Steamboat Springs

4 Mile12k

From $25.75 Open

Register →

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

Sat, Oct 3 · Colorado Springs, CO Colorado Springs

Kids KVirtual Kids K2027 VIRTUAL 5k +16

From $0 Open 20 spots left

Register →

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

Sat, Oct 3 · Canon City, CO Canon City

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

From $40 Open

Register →

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

Sun, Oct 4 · Windsor, CO Windsor

1 Mile Fit & Fun Run5K10K +2

From $20 Open

Register →

RMRR October Trophy Series

Sun, Oct 4 · Aurora, CO Aurora

5k8mi

From $10 Open

Register →

Manitou 5K

Sat, Oct 10 · Manitou Springs, CO Manitou Springs

Manitou 5KManitou 5K 18 and under

From $25 Closed

Register →

The Long View Marathon

Sat, Oct 10 · Fort Collins, CO Fort Collins

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

From $35 Open

Register →

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

Sat, Oct 10 · Centennial, CO Centennial

Family Fun Run 1 Mile5K Registration5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open

Register →

Breckenridge RunFest

Sat, Oct 10 · Breckenridge, CO Breckenridge

Kids & Family Mile5K10K +2

From $25 Open

Register →

Bagel Run 5K/10K/13.1 DENVER/AURORA

Sat, Oct 10 · Centennial, CO Centennial

Family 1 Mile Fun Run5K RegistrationVirtual Run Registration +3

From $30 Open

Register →

Dialysis Dash 5K

Sat, Oct 10 · Grand Junction, CO Grand Junction

5K Dialysis Dash Run

From $20 Open

Register →

Westy Half & 5k

Sun, Oct 11 · Westminster, CO Westminster

5kHalf Marathon

From $30 Open

Register →

The Great Trailhead Foot Race 5 & 10 Miler

Sat, Oct 17 · Lakewood, CO Lakewood

5 Miler10 Mile

From $55 Open

Register →

Race to Cure Sarcoma Denver

Sat, Oct 24 · Denver, CO Denver

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

From $10 Open

Register →

YMCA of Pueblo Spooky Sprint 5K

Sat, Oct 24 · Pueblo, CO Pueblo

YMCA of Pueblo Spooky Sprint 5K

From $30 Closed

Register →

Apex Foundation Trick or Trot 5K & Halloween Hunt

Sat, Oct 24 · Arvada, CO Arvada

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

From $10 Open

Register →

Ghosts and Goblins 5K/10K

Sun, Oct 25 · Denver, CO Denver

5KVirtual Race10K

From $30 Open

Register →

Foundry Halloween 5k

Sat, Oct 31 · Steamboat Springs, CO Steamboat Springs

Foundry 5K

From $25.75 Open

Register →

I Ain't Scared (of 5k)

Sat, Oct 31 · Thornton, CO Thornton

5k

From $29 Open

Register →