Subscribe to our Newsletters — The most impactful training advice and expertly curated race suggestions to help you race further. 100% free, unsubscribe anytime.

Colorado

Here's a full listing of races and events in Colorado.

Visit these pages for just marathons, half marathon, 10K or 5K races.

featured races

Currently there are no featured events for this state.

running & multisport races

The Elevation Everest Race

Sep 26, 2026

Sep 26, 2026

Triathlon / Multisport

Sep 27, 2026

Sep 27, 2026

Sep 27, 2026

Colorado Springs Marathon, Half, 5K, and Kids K

Oct 3, 2026

Oct 3, 2026

2026 SKECHERS Hot Chocolate Run - Denver

Road Running

Oct 4, 2026

Denver

Long View Marathon & Half

Oct 10, 2026

Oct 11, 2026

Indian Creek Trail Runs

Trail Running

Oct 17, 2026

Denver

The Great Trailhead Foot Race

Trail Running

Oct 17, 2026

Lakewood

Narrowleaf Lake & Pumpkin Run

Road Running

Oct 31, 2026

Loveland

City Park 5k & 1 Mile Walk of Hope for Pancreatic Cancer Research

Nov 7, 2026

Dec 12, 2026