The Most Popular Races in Colorado

Red, White, and WARRIOR 5K

Grand Junction, CO · Jul 3, 2027

Let Freedom Run 5k/10k - Louisville

Louisville, CO · Jul 4, 2027

Erie Half & 5k

Erie, CO · Aug 15, 2027

Cookie Chase

Denver, CO · Jul 10, 2027

Grand Valley Brew Runs

Grand Junction, CO · Sep 27, 2026

Summer Sizzler- Denver

Denver, CO · Aug 7, 2027

Unicorn 5k (North)

Thornton, CO · Jun 19, 2027

Independence Day Freedom 5K

Buena Vista, CO · Jul 4, 2027

Summer Splash Prairie Dog Half, 10k, & 5k

Castle Rock, CO · Jul 17, 2027

Pioneer Prairie Dog Half, 10k & 5k

Westminster, CO · Aug 22, 2027

Severance Glow 5K Run or Walk

Severance, CO · Sep 18, 2026

All-Out Fall Fest

Westminster, CO · Sep 19, 2026

Autumn Run

Buena Vista, CO · Sep 19, 2026

Popsicle 5K/10K/Half - Colorado Springs

Colorado Springs, CO · Jul 31, 2027

Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon

Canon City, CO · Oct 3, 2026

Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run

Windsor, CO · Oct 4, 2026

Father's Day Classic 10k, 5k, & 1 Mile

Arvada, CO · Jun 20, 2027

All-Out Dog Days

Westminster, CO · Jul 10, 2027

Spooky Sprint - Denver

Denver, CO · Oct 3, 2026

Turkey Trails- Denver

Littleton, CO · Nov 7, 2026

Unicorn 5k (South)

Highlands Ranch, CO · Aug 7, 2027

Mountain Marmot Trail Run presented by Durango Running Company

Durango, CO · Sep 26, 2026