Upcoming 5Ks in Colorado

Endurance Grid lists two hundred six 5Ks in Colorado, from October 2026 to October 2027 across 51 cities.

206
Races
51
Cities
12
Sports

Running races in Colorado

Your next race is out there. Go find it.

All Colorado Running Races

Frequently Asked Questions

How many 5Ks are in Colorado?
Endurance Grid's Race Calendar lists 206 upcoming 5Ks in Colorado, in 51 cities, from October 2026 to October 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, Westminster, Pueblo, Fort Collins, Golden, Grand Junction, and Littleton, plus 41 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, HYROX, mountain bike, paddle, rucking, running, trail running, triathlon, and ultra races of various distances.