Running Races in Westminster, Colorado 2026 | Browse All Races

There are 10 running races in Westminster, Colorado in 2026. The next is the Golden Harvest Half Marathon & 5k/10k - Denver on September 5. Distances include half marathons, 10K races, ultras.

Golden Harvest Half Marathon & 5k/10k - Denver

Sat, Sep 5 · Westminster, CO Westminster

Virtual 1 Mile5K10K +4

From $17 Open Closing Soon 5 spots left

All-Out Fall Fest

Sat, Sep 19 · Westminster, CO Westminster

Virtual 5KVIRTUAL 5KVIRTUAL 10K +3

From $20 Open Closing Soon

Big Waves Family 5K run/walk

Sat, Oct 3 · Westminster, CO Westminster

Road Big Waves Family 5k

From $45 Open

Westy Half & 5k

Sun, Oct 11 · Westminster, CO Westminster

Road 5kHalf Marathon

From $30 Open

All-Out Fa La La

Sat, Dec 5 · Westminster, CO Westminster

Virtual VIRTUAL 5K5K10K +3

From $20 Open Closing Soon

Candy Cane Course - Denver

Sun, Dec 6 · Westminster, CO Westminster

Virtual 1 Mile5k10k +4

From $22 Open 5 spots left

Erin Go Bragh 7.77k

Sat, Mar 13 · Westminster, CO Westminster

Road 7.77k7.77k

From $33 Open

All-Out Beat the Heat

Sat, Apr 24 · Westminster, CO Westminster

Virtual VIRTUAL 5K5K5K +9

From $20 Open

Colorado Women's Classic - Westminster

Sun, May 9 · Westminster, CO Westminster

Road 5k5k10 Miler +3

From $35 Open

All-Out Dog Days

Sat, Jul 10 · Westminster, CO Westminster

Virtual VIRTUAL 5K5K5K +9

From $20 Open

Running Races in Westminster, Colorado — 2026

All Colorado Races