Ranked · Updated August 2026
The Most Popular Races in Colorado
Ranked by real runner activity on Find The Run — saves, race-week reminders, and registration clicks over the last 90 days. The races Colorado's runners are actually engaging with.
Let Freedom Run 5k/10k - Louisville
Louisville, CO · Jul 4, 2027
Spirit of the West 5K Run/Walk
Golden, CO · Jul 25, 2027
All Hands on Deck The Pirates 5K
Colorado Springs, CO · Sep 19, 2026
Unicorn 5k (North)
Thornton, CO · Jun 19, 2027
Red, White, and WARRIOR 5K
Grand Junction, CO · Jul 3, 2027
Cookie Chase
Denver, CO · Jul 10, 2027
Erie Half & 5k
Erie, CO · Aug 16, 2026
Summer Splash Prairie Dog Half, 10k, & 5k
Castle Rock, CO · Jul 17, 2027
All-Out Summer Breeze
Arvada, CO · Jun 12, 2027
Autumn Run
Buena Vista, CO · Sep 19, 2026
Flamingo Day 5K
Denver, CO · Jun 6, 2027
All-Out Dog Days
Westminster, CO · Jul 10, 2027
Colorado 13er (Half Marathon/10k/5k)
Louisville, CO · Jun 6, 2027
Pioneer Prairie Dog Half, 10k & 5k
Westminster, CO · Aug 23, 2026
Mountain Marmot Trail Run presented by Durango Running Company
Durango, CO · Sep 26, 2026
All-Out Fall Fest
Westminster, CO · Sep 19, 2026
The Denver 5k
Denver, CO · Sep 12, 2026
Severance Glow 5K Run or Walk
Severance, CO · Sep 18, 2026
Popsicle 5K/10K/Half - Colorado Springs
Colorado Springs, CO · Jul 31, 2027
Break Your Neck: Walk, Run, or Roll
Pueblo, CO · Sep 5, 2026
Just Peachy 5k & 10k
Palisade, CO · Aug 15, 2026
Grand Valley Brew Runs
Grand Junction, CO · Sep 27, 2026
Golden Harvest Half Marathon & 5k/10k - Denver
Denver, CO · Sep 5, 2026
Golden Harvest Half Marathon & 5k/10k - Denver
Westminster, CO · Sep 5, 2026
All-Out Fa La La
Westminster, CO · Dec 5, 2026
Rankings reflect runner activity on Find The Run — saves, reminders, and registration clicks over the last 90 days — and update daily.