5K Races in Colorado — 2026

There are 258 5K races in Colorado scheduled for 2026. The next is the 6th Annual Skidola: Telluride's Winter Uphill Race in Telluride on March 13. Colorado 5K races run primarily March through February.

Run for Mental Health 5K/10K/13.1 DENVER/AURORA

Sat, Mar 7 · Centennial, CO Centennial

Family Fun Run 1 MileVirtual Run Registration (5K/10K/13.1)5K Registration +3

From $30 Closed

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

Sat, Mar 7 · Centennial, CO Centennial

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

From $30 Closed

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4th Anniversary Beer and Donut Hole Miles

Sat, Mar 7 · Arvada, CO Arvada

Beer Relay - Team of Two (only One Team Member Needs to Sign Up and Pay)Donut Hole MileBeer Mile - Individual Participant

From $5 Open Closing Soon 20 spots left

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LWC Run/Walk 5K Costa Rica Fundraiser

Sat, Mar 7 · Denver, CO Denver

LWC Run/Walk 5K Costa Rica Fundraiser

From $45 Open Closing Soon

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6th Annual Skidola: Telluride's Winter Uphill Race

Fri, Mar 13 · Telluride, CO Telluride

Men on Skis/Splitboards with SkinsMen on Microspikes/SnowshoesWomen on Microspikes/Snowshoes +1

From $40 Open Closing Soon

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Sharin' O' The Green 5k

Sat, Mar 14 · Fort Collins, CO Fort Collins

5k Run/Walk

From $25 Open Closing Soon

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HRCA St. Patrick's Day 5K

Sat, Mar 14 · Highlands Ranch, CO Highlands Ranch

5K Run/Walk

From $40 Open Closing Soon

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8th Annual ☘️ShamROCK Stampede 5k & RRCA 10k State Championship☘️

Sat, Mar 14 · Castle Rock, CO Castle Rock

FREE 1k Kid's Dash5KRRCA State Championship 10K

From $0 Open Closing Soon

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St. Paddy's Day Lucky Run 5K/10K/13.1 DENVER/AURORA

Sat, Mar 14 · Centennial, CO Centennial

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

From $30 Closed

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Lucky Brew Race 5K, 10K, 15k & Half Marathon

Sat, Mar 14 · Severance, CO Severance

Lucky Brew 5KLucky Brew 15KLucky Brew 10K +2

From $20 Open Closing Soon

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

Sat, Mar 14 · Centennial, CO Centennial

Family Fun Run 1 Mile5K RegistrationVirtual Run Registration (5K/10K/13.1) +3

From $30 Closed

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Lucky Leprechaun 5K

Sun, Mar 15 · Boulder, CO Boulder

Lucky Leprechaun 5K

From $40 Open Closing Soon

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All-Out Spring Fever

Sun, Mar 22 · Golden, CO Golden

5KVIRTUAL 5KVIRTUAL 10K +3

From $25 Open Closing Soon

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Central Park 5k

Sun, Mar 22 · Denver, CO Denver

5k Run/Walk

From $20 Open

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The City Park Circuit, Powered by New Balance

Sat, Mar 28 · Denver, CO Denver

Youth Race (Ages 17 and under)Masters Race (Ages 40+)The City Park Circuit

From $35 Open

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DU Run Into Spring 5k

Sun, Mar 29 · Gunnison, CO Gunnison

DU Run Into Spring

From $10 Open

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Erie Easter Bunny Hop

Sat, Apr 4 · Erie, CO Erie

Erie Easter Bunny Hop 5k

From $35 Open

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Always Hope Easter Run 5K/10K/13.1 DENVER/AURORA

Sat, Apr 4 · Centennial, CO Centennial

Family 1 Mile Fun RunVirtual Run Registration5K Registration +3

From $30 Open

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Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA

Sat, Apr 4 · Centennial, CO Centennial

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

From $30 Open

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Run Through The Decades 6K/7K/8K/Half - Colorado Springs

Sat, Apr 11 · Colorado Springs, CO Colorado Springs

6KVirtual 6KVirtual 7K +5

From $35 Open

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Dash for Detection: Oral Cancer Awareness 5K

Sat, Apr 11 · Denver, CO Denver

Dash for Detection: Oral Cancer Awareness 5K

From $25 Open Closing Soon

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Rockin on the River 5K

Sat, Apr 11 · Littleton, CO Littleton

5K

From $26 Open

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ASDAsh 5K to Beat Tooth Decay

Sat, Apr 11 · Aurora, CO Aurora

ASDAsh 5K to Beat Tooth Decay

From $27.36 Closed

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Donut Dash

Sun, Apr 12 · Denver, CO Denver

Virtual 5K5K

From $30 Open

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Boulder Track Series Meet 1

Sun, Apr 12 · Longmont, CO Longmont

2-Mile - 13 to 19 years2-Mile - 20 years & older800m - 13 to 19 years +14

From $10 Open

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Spring Fling Prairie Dog Half, 10k, & 5k

Sun, Apr 12 · Arvada, CO Arvada

5k10kHalf Marathon

From $25 Open

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RMRR April Trophy Series

Sun, Apr 12 · Denver, CO Denver

RMRR April Trophy Series Race

From $10 Open

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Platte River Half-Marathon, Relay & 5k

Sun, Apr 12 · Littleton, CO Littleton

5kHalf Marathon RelayHalf Marathon

From $40 Open

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Hop Into Spring 5K - Denver

Sun, Apr 12 · Denver, CO Denver

5KVirtual 5K5K-No Shirt

From $30 Open

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Woody's Tortoise And Hare

Sat, Apr 18 · Fountain, CO Fountain

Woody's Tortoise and Hare 5K

From $20 Open

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Earth Day 5K

Sat, Apr 18 · Durango, CO Durango

Earth Day 5K

From $30 Open

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Donot Stop Half Marathon (5k/10k) - Colorado Springs

Sat, Apr 18 · Colorado Springs, CO Colorado Springs

1 Mile5K10K +4

From $17 Open Closing Soon 5 spots left

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All-Out Beat the Heat

Sat, Apr 18 · Westminster, CO Westminster

VIRTUAL 5K5KVIRTUAL 10K +3

From $25 Open

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Great Western Trail Race

Sat, Apr 18 · Severance, CO Severance

Kids Fun Run5k10k +1

From $15 Open

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2026 Fairmount Fit Fest

Sun, Apr 19 · Golden, CO Golden

Fairmount 5K RunFairmount 5k WalkAll Access Pass (includes 5k Run or Walk, Ninja course & Fun Run) +4

From $20 Open Closing Soon

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DoNot Stop Half Marathon (5k/10k) - Denver

Sun, Apr 19 · Westminster, CO Westminster

1 Mile5K10K +4

From $17 Open Closing Soon 5 spots left

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Run Wild! Rabies Free Africa 5K

Fri, Apr 24 · Virtual, CO Virtual

Run Wild! Rabies Free Africa 5K

From $45 Open

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Alpine Autism Center 19th Annual "Run for the One" 5k Walk/Run

Sat, Apr 25 · Colorado Springs, CO Colorado Springs

5K (Adult 13 and up)5K (Child 6-12)5K (Child 5 and Under)

From $0 Open

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Bigfoot Half Marathon

Sat, Apr 25 · Estes Park, CO Estes Park

5K Run/WalkHalf Marathon

From $45 Open Closing Soon

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

Sat, Apr 25 · Centennial, CO Centennial

Family 1 Mile Fun Run5K RegistrationVirtual Run Registration +3

From $30 Open

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SOAR 5K

Sat, Apr 25 · Golden, CO Golden

SOAR 5K WalkSOAR 5K Run

From $15 Open

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Strut for Mutts 2026

Sat, Apr 25 · Rifle, CO Rifle

Strut for Mutts 2026

From $30 Open

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

Sat, Apr 25 · Centennial, CO Centennial

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

From $30 Open

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Blue Heron Half & 5K

Sun, Apr 26 · Brighton, CO Brighton

5kHalf-Marathon

From $30 Open

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Unicorn 5k (Denver-East)

Sun, Apr 26 · Denver, CO Denver

5k1/2 Mile(ish) Saunter

From $13 Open

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Pueblo Spring Runoff

Sun, Apr 26 · Pueblo, CO Pueblo

5K Run10M Run10K Run

From $35 Open

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2026 Flying Pig 5K

Sun, Apr 26 · Fort Collins, CO Fort Collins

2026 Flying Pig 5K

From $40 Open

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2026 Dash & Dine 5k Run Series

Tue, Apr 28 · Boulder, CO Boulder

#4 May 19#1 April 28#2 May 5 +2

From $35 Open

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Friends of the National Center Science Stride 5K

Fri, May 1 · Boulder, CO Boulder

5KVirtual 5K

From $50 Closed

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Adams County Foster Care 5K Run/Walk and 1 mile fun run

Sat, May 2 · Brighton, CO Brighton

1 Mile Fun Run5K Family Registration (up to 5 family members at same address)5K Students/Youth 18 & Under +2

From $0 Open

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