Upcoming 10Ks in Colorado

Endurance Grid lists eighty-five 10Ks in Colorado, from July 2026 to June 2027 across 28 cities.

85
Races
28
Cities
13
Sports

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Running races in Colorado

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Frequently Asked Questions (FAQs)

How many 10Ks are in Colorado?+
Endurance Grid's Race Calendar lists 85 upcoming 10Ks in Colorado, in 28 cities, from July 2026 to June 2027.
How long is a 10K?+
A 10K is 6.2 miles (10 kilometers).
Which Colorado cities host 10Ks?+
10Ks in Colorado are held in Centennial, Colorado Springs, Westminster, Arvada, Denver, Littleton, Golden, Breckenridge, Buena Vista, and Fort Collins, plus 18 other cities.
What other race distances are available in Colorado?+
Beyond 10K, Colorado races cover a wide range of distances. Colorado also has 5Ks, half marathons, and marathons for running races. Additionally, Endurance Grid's Race Calendar also covers other sports, with adventure, road cycling, duathlon, gravel, HYROX, mountain bike, paddle, rucking, running, swimrun, trail running, triathlon, and ultra races of various distances.