Running Races in Colorado
Colorado has 330 upcoming running races scheduled for 2026. The calendar runs year-round — busiest in August through October, quietest in March through May. No single city dominates the calendar. Colorado Springs leads with 37 races, followed by Denver (34), Centennial (31), and Littleton (16). The remaining 64% of the calendar is spread across smaller cities.
Running races by month in Colorado
Sep (89) · Aug (88) · Oct (53) · Nov (35) · Dec (21) · Feb (8) · Jan (7) · Jun (7) · Apr (6) · May (6) · Jul (6) · Mar (4)
Notable Colorado events
- Bound for Boston Marathon & Half — Denver, August 2 — Boston-qualifier marathon and half marathon
- Pikes Peak Marathon — Manitou Springs, September 19 — mountain marathon
Showing 24 of 330
Running
July 30 - Beginner & Skills / Advanced @ Ute Valley Park
July 30, 2026
Colorado Springs, CO
Running
Snowshoe Shuffle 5K Run
Creede, CO
Running
Snowshoe Shuffle 5K Run
August 1, 2026
Creede, CO
Running
Wild West Relay - 200 Mile Point to Point Race
Fort Collins, CO
Running
Wild West Relay - 200 Mile Point to Point Race
August 2, 2026
Fort Collins, CO
Running
Aug 6 - Intermediate @ Cheyenne Mountain State Park
August 6, 2026
Colorado Springs, CO
Top Cities for Running Races in Colorado
Frequently asked questions
How do I find running races near me?▾
Enter your zip code on RACE or use the location-based pages at /marathons-near-me, /half-marathons-near-me, /10k-near-me, or /5k-near-me. We show every upcoming running event within your selected radius, sorted by distance from you.
What's the most popular running distance in the US?▾
By a wide margin, the 5K. The half marathon is the most popular distance over 10 miles. Each distance has its own hub on RACE — /5k-races, /10k-races, /half-marathons, /marathons — with live event counts and state-by-state breakdowns.
When is running race season in the US?▾
June is the single busiest month for running events. The June–October stretch carries roughly 70% of the year’s running calendar. December through March is the quietest period — most regions don’t publish next year’s spring races until late winter, so the calendar grows back as race directors finalize dates.
Which states have the most running races?▾
Ohio, Florida, Texas, Michigan, and California lead the country in upcoming running event volume. Every state hosts dozens of upcoming races — including smaller states like Wyoming, Vermont, and North Dakota. The "Browse by state" grid on this page links to a dedicated running hub for every state.
How do I register for a running race?▾
For RACE-native events, you can register and pay on this site. For events hosted on external platforms (RunSignUp, RaceRoster, and similar), we link you directly to the official registration page. Either way, you find the race here.