Upcoming 5Ks in Colorado

Endurance Grid lists two hundred forty-four 5Ks in Colorado, from September 2026 to August 2027 across 60 cities.

244
Races
60
Cities
13
Sports

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Running races in Colorado

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Frequently Asked Questions

How many 5Ks are in Colorado?
Endurance Grid's Race Calendar lists 244 upcoming 5Ks in Colorado, in 60 cities, from September 2026 to August 2027.
How long is a 5K?
A 5K is a running race where athletes run 3.1 miles long (5 kilometers) for time.
Which Colorado cities host 5Ks?
5Ks in Colorado are held in Denver, Centennial, Colorado Springs, Arvada, Littleton, Fort Collins, Westminster, Pueblo, Aurora, and Grand Junction, plus 50 other cities.
What other race distances are available in Colorado?
Beyond 5K, Colorado races cover a wide range of distances. Colorado also has 10Ks, half marathons, and marathons for running races. Additionally, Endurance Grid's Race Calendar also covers other sports, with adventure, road cycling, duathlon, gravel, mountain bike, paddle, rucking, running, swimming, swimrun, trail running, triathlon, and ultra races of various distances.