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

Sat, Jul 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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The Hero's Journey 5K

Sat, Jul 25 · Aurora, CO Aurora

Kids Fun RunVirtual 5K5K (21 and older) +1

From $10 Closed

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Spirit of the West 5K Run/Walk

Sun, Jul 26 · Golden, CO Golden

5K Run/Walk

From $30 Open

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Popsicle 5K/10K/Half - Colorado Springs

Sat, Aug 1 · Colorado Springs, CO Colorado Springs

5K-No ShirtVirtual 5K5K +6

From $25 Open Closing Soon

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Unicorn 5k (South)

Sat, Aug 1 · Highlands Ranch, CO Highlands Ranch

5k Run/Walk3/4 (ish) Mile Saunter

From $13 Open

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Flying Colors 5K Fun Run/Walk

Sat, Aug 1 · Craig, CO Craig

5K Fun Run/Walk

From $30 Open

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RMRR August Trophy Series

Fri, Aug 7 · Centennial, CO Centennial

5k

From $10 Open

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Summer Sizzler- Denver

Sat, Aug 8 · Thornton, CO Thornton

1 Mile5k10k +4

From $17 Open 5 spots left

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Arapahoe Warrior 5K

Sat, Aug 8 · Centennial, CO Centennial

Warrior 5K

From $25 Open

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All-Out Runapalooza

Sat, Aug 8 · Arvada, CO Arvada

5KVIRTUAL 5KVIRTUAL 10K +3

From $25 Open

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Summer Sizzler- Colorado Springs

Sun, Aug 9 · Colorado Springs, CO Colorado Springs

1 Mile5k10k +4

From $17 Open 5 spots left

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Miles for Migraine Colorado

Sat, Aug 15 · Denver, CO Denver

2 Mile Walk5K Run

Closed

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

Sat, Aug 15 · Centennial, CO Centennial

Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)5K Registration +3

From $30 Open

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

Sat, Aug 15 · Centennial, CO Centennial

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

From $30 Open

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Erie Half & 5k

Sun, Aug 16 · Erie, CO Erie

5kHalf Marathon

From $30 Open

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2026 True Impact Ministries 5K/10K

Sat, Aug 22 · Centennial, CO Centennial

5K Run or Walk10k Run or Walk

From $39 Closed 75 spots left

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Ram Run

Sat, Aug 22 · Denver, CO Denver

Ram Run Kids Race (12 and under)Ram Run - VirtualRam Run

From $10 Open

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Byers Peak Stampede Half Marathon & 5K Run

Sat, Aug 22 · Fraser, CO Fraser

5KHalf Marathon

From $45 Open

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Rebel Run 5k

Sun, Aug 23 · Denver, CO Denver

5k Walk5k Run5k Virtual Race

From $8 Closed

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Pioneer Prairie Dog Half, 10k & 5k

Sun, Aug 23 · Westminster, CO Westminster

5k10kHalf Marathon

From $25 Open

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RexRun For PAWSitivity 2026 Trail Run/Walk

Sat, Aug 29 · Aurora, CO Aurora

Kids 1-mile Run/Walk5K Trail RunFamily 5K Trail Walk

From $20 Open

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Rocky Mountain 5K presented by School District 11

Sat, Aug 29 · Colorado Springs, CO Colorado Springs

Rocky Mountain 5K

From $35 Open

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

Sat, Aug 29 · Centennial, CO Centennial

Family 1 Mile Fun Run5K RegistrationVirtual Run Registration +3

From $30 Open

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

Sat, Aug 29 · Centennial, CO Centennial

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

From $30 Open

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South Fork Alder Ass Race

Sat, Sep 5 · South Fork, CO South Fork

Alder Ass Race Mini CourseAlder Ass Race Standard CourseGhost Runners

From $40 Open

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Golden Harvest Half Marathon & 5k/10k - Denver

Sat, Sep 5 · Denver, CO Denver

1 Mile5k10k +4

From $17 Open Closing Soon 5 spots left

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Demon Dash

Sat, Sep 5 · Arvada, CO Arvada

5K

From $25 Closed

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10k at 10,000 Feet

Sun, Sep 6 · Steamboat Springs, CO Steamboat Springs

5k10k

From $25 Open

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Golden Harvest Half Marathon & 5k/10k - Colorado Springs

Sun, Sep 6 · Colorado Springs, CO Colorado Springs

1 Mile5k10k +4

From $17 Open Closing Soon 5 spots left

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Oak Creek No Fun Run

Mon, Sep 7 · Oak Creek, CO Oak Creek

5K

From $25 Open

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Labor Day Half Marathon

Mon, Sep 7 · Parker, CO Parker

5K10KVirtual Race +1

From $27 Open

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National Chocolate Day: Run for Chocolates 5K/10K/13.1 DENVER/AURORA

Sat, Sep 12 · Centennial, CO Centennial

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

From $30 Open

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For The City Network 5K

Sat, Sep 12 · Greeley, CO Greeley

For The City Network 5K

From $45 Open

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Spirit of the Valley 5k

Sat, Sep 12 · Grand Junction, CO Grand Junction

5k Run5K Roll1K Roll +1

From $10 Open

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The Denver 5k

Sat, Sep 12 · Denver, CO Denver

5kFREE Kids Fun Run

From $0 Open

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

Sat, Sep 12 · Centennial, CO Centennial

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

From $30 Open

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RMRR September Trophy Series

Sun, Sep 13 · Thornton, CO Thornton

5k10k

From $10 Open

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9/11 Heroes Run - Denver, Colorado

Sun, Sep 13 · Denver, CO Denver

1-Mile Run/Walk5K Run - Individual5K Ruck - Individual +3

From $20 Closed

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Tiger Prowl 5K

Sun, Sep 13 · Denver, CO Denver

Tiger Prowl 5K Fun Run/WalkTiger Prowl Youth 5K---register your 12 and under child here*Tiger Prowl 5K Chill Option

From $15 Open

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Severance Glow 5K Run or Walk

Fri, Sep 18 · Severance, CO Severance

Severance Glow 5K

From $30 Open

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Miles 4 Madison 5K & 1K

Sat, Sep 19 · Littleton, CO Littleton

1K5KVirtual 5K/1K

From $25 Closed

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All-Out Fall Fest

Sat, Sep 19 · Westminster, CO Westminster

VIRTUAL 5K5K10K +3

From $25 Open Closing Soon

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All Hands on Deck The Pirates 5K

Sat, Sep 19 · Colorado Springs, CO Colorado Springs

All Hands on Deck Pirates 5K

From $25 Closed

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Battle by the Brook

Sat, Sep 19 · Deckers, CO Deckers

Family RaceCompetitive Race

From $89 Open 75 spots left

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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

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Farmers 5000

Sun, Sep 20 · Wheat Ridge, CO Wheat Ridge

Adult 5K RegistrationAlumni 5K RegistrationHigh School Student and Staff 5K Registration. T-shirt included in registration. +4

From $10 Open

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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

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Fall Equinox

Sun, Sep 20 · Fort Collins, CO Fort Collins

5 MileVirtual 5 MileHalf Marathon +1

From $50 Open

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

Sat, Sep 26 · Centennial, CO Centennial

Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)5K Registration +3

From $30 Open

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NIGHT NATION RUN - DENVER

Sat, Sep 26 · Commerce City, CO Commerce City

VIP REGISTRATIONSTANDARD REGISTRATIONPREMIUM REGISTRATION

From $35 Open

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