10K Races in Colorado — 2026

There are 27 10K races in Colorado scheduled for 2026. The next is the Eat. Run. Adopt. 10K in Berthoud on August 8. Colorado 10K races run primarily August through May.

Spring Creek Memorial Trail Run

Sat, Jul 18 · Steamboat Springs, CO Steamboat Springs

5k9.5 Mile

From $25.75 Open Closing Soon 100 spots left

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Eat. Run. Adopt. 10K

Sat, Aug 8 · Berthoud, CO Berthoud

10KCHILD CARE

From $5 Open Closing Soon

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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 Open 30 spots left

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11th Annual Log Hill Hustle

Sun, Aug 23 · Ridgway, CO Ridgway

Hand Cycle - 5KLog Hill Hustle 5kHand Cycle - 10K +1

From $30 Open

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James Test Site

Sun, Aug 30 · Lyons, CO Lyons

5K10KNot Racing +1

From $0 Closed

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The Beaver Run

Sat, Sep 5 · Breckenridge, CO Breckenridge

5K Run10K Run15K Run

From $40 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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10k at 10,000 Feet

Sun, Sep 6 · Steamboat Springs, CO Steamboat Springs

5k10k

From $25 Open

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14th Annual Superhero Event

Thu, Sep 10 · Greeley, CO Greeley

Virtual 1 Mile1 Mile - 13+1 Mile - 12 & Under +5

From $20 Open

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RMRR September 5k/10k

Sun, Sep 13 · Thornton, CO Thornton

5k10k

From $10 Open

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Wellington STAR Foundation 5K 10K

Sat, Sep 19 · Wellington, CO Wellington

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

From $10 Open

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Chile & Frijole Hot to Trot 5K/10K

Sun, Sep 20 · Pueblo, CO Pueblo

5K Run10K Run

From $35 Closed

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

Sat, Sep 26 · Parker, CO Parker

5K10K

From $40 Open

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Lafayette Music Fest -5K - 10K

Sat, Oct 3 · Lafayette, CO Lafayette

5K10K

From $40 Open

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RMRR October 5k/8mi

Sun, Oct 4 · Aurora, CO Aurora

5k8mi

From $10 Open

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Fall Series - Get Dirty! Get Muddy!

Sun, Oct 4 · Colorado Springs, CO Colorado Springs

Fall Series IFall Series IIFall Series III +2

From $35 Closed

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Your Story Isn't Over 5k/10k/Kids 1-Mile

Wed, Oct 7 · Littleton, CO Littleton

Your Story Isn't Over Kids RunYour Story Isn't Over Virtual 5kYour Story Isn't Over 5k +1

From $20 Open

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The Great Trailhead Foot Race 5 & 10 Miler

Sat, Oct 17 · Lakewood, CO Lakewood

5 Miler10 Mile

From $55 Open Closing Soon

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Spooky Sprint - Colorado Springs

Sat, Oct 31 · Colorado Springs, CO Colorado Springs

5k10KVolunteer then Run +4

From $17 Open Closing Soon 5 spots left

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Feet for Justice Run

Sun, Nov 1 · Denver, CO Denver

Virtual Runner5K10K +1

From $10 Open

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City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)

Sat, Nov 7 · Denver, CO Denver

1 Mile (ish) Walk of Hope (untimed)5k Run/Walk10k Run

From $16 Open Closing Soon

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Alamosa Veterans Memorial Park Race

Sat, Nov 7 · Alamosa, CO Alamosa

Alamosa Veterans Memorial Park 10kAlamosa Veterans Memorial Park 5k

From $20 Open

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Denver Veterans Day Run

Sat, Nov 14 · Denver, CO Denver

5K Run/Walk10K Run/Walk10K Rippetoe Rucksack Challenge

From $45 Open

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Pumpkin Pie 5K/10K

Sat, Nov 21 · Denver, CO Denver

Virtual Race5K10K

From $30 Open

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Broomfield Turkey Day 5K/10K

Thu, Nov 26 · Broomfield, CO Broomfield

5k10kKids Fun Run (Approx 1/2 Mile) UNTIMED

From $17 Open

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Santa Catch 5k & 10k

Sat, Dec 12 · Windsor, CO Windsor

1 Mile Kids Fun RunSanta Catch 5KSanta Catch 10k

From $15 Open

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Erin Go Bragh 7.77k

Sat, Mar 13 · Westminster, CO Westminster

7.77k7.77k

From $33 Open

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Colorado Women's Classic - Westminster

Sun, May 9 · Westminster, CO Westminster

5k5k10k +3

From $35 Closed

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