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.

2nd Annual Pancreatic Cancer Awareness in Honor of Diana Cantu - 5K Fun Run/Walk

Sat, Jul 25 · Alamosa, CO Alamosa

5k Run/walk - 16 & Under5k Run/walk - 18 & Over

From $18 Open

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

Sat, Jul 25 · Centennial, CO Centennial

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

From $30 Open

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

Sat, Jul 25 · Centennial, CO Centennial

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

From $30 Open

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The Hero's Journey 5K

Sat, Jul 25 · Aurora, CO Aurora

Kids Fun Run5K Under 21Virtual 5K +1

From $10 Open

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Spirit of the West 5K Run/Walk

Sun, Jul 26 · Golden, CO Golden

5K Run/Walk

From $35 Open

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CCOC Kids Triathlon

Wed, Jul 29 · Colorado Springs, CO Colorado Springs

Kids triathlon

Closed

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12th Annual Run for the Ring

Sat, Aug 1 · Aurora, CO Aurora

5K Race - Run/WalkVirtual 5K Run/WalkKids Fun Run +1

From $12 Closed

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Popsicle 5K/10K/Half - Colorado Springs

Sat, Aug 1 · Colorado Springs, CO Colorado Springs

5KVirtual 5K5K-No Shirt +6

From $25 Open

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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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Eldorado Run for the Cure

Thu, Aug 6 · Eldorado Springs, CO Eldorado Springs

Eldorado Run for the Cure

From $30 Open

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Choice City Running Festival

Fri, Aug 7 · Fort Collins, CO Fort Collins

Jane Welzel Mountain Avenue MileHuman Race 5kHuman Race 10k +4

From $20 Closed

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RMRR August Trophy Series

Fri, Aug 7 · Centennial, CO Centennial

5k

From $10 Open

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Dog Days Of Summer 2026

Sat, Aug 8 · Longmont, CO Longmont

Kidz DashDog Days of Summer 3.5 Loop

From $20 Open 25 spots left

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Summer Sizzler- Denver

Sat, Aug 8 · Thornton, CO Thornton

1 Mile5k10k +4

From $17 Open Closing Soon 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 Registration5K/10K/13.1 Eco-Registration (No Shirt) +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)Virtual Run Registration (5K/10K/13.1) +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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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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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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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 Run5k Walk5k Virtual Race

From $10 Open

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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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Run Like the Wind 5k / 2k / Dog Jog

Sat, Aug 29 · Allenspark, CO Allenspark

2k Run / Walk5K Run

From $20 Open

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RexRun For PAWSitivity 2026 Trail Run/Walk

Sat, Aug 29 · Aurora, CO Aurora

Kids 1-mile Run/WalkFamily 5K Trail Walk5K Trail Run

From $20 Open

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Run for Hope - Colorado Springs

Sat, Aug 29 · Colorado Springs, CO Colorado Springs

Memorial MileVirtual Race5K Run/Walk

From $25 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 RunVirtual Run Registration5K/10K/13.1 Eco-Registration (No Shirt) +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 MileVirtual Run Registration (5K/10K/13.1)5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open

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Wine Run 5k at The Winery at Holy Cross Abbey

Sun, Aug 30 · Canon City, CO Canon City

5kVolunteer with check-in 9:30am-11:00am then RunVolunteer and Run 8:00am to 9:30am

From $15 Open 5 spots left

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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 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 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 Closing Soon

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6 Dot Dash

Sat, Sep 12 · Littleton, CO Littleton

5KVirtual 5K

From $40 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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National Chocolate Day: Run for Chocolates 5K/10K/13.1 DENVER/AURORA

Sat, Sep 12 · Centennial, CO Centennial

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

From $30 Open

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Spirit of the Valley 5k

Sat, Sep 12 · Grand Junction, CO Grand Junction

5k Run1K Roll1K Run +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/10K/13.1 Eco-Registration (No Shirt)5K Registration +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 Ruck - Individual5K Run - PUSHER +3

From $20 Closed

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Tiger Prowl 5K

Sun, Sep 13 · Denver, CO Denver

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

From $15 Open

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