Half Marathon · Littleton, CO
Colorado Mountain Half+ Series
Start line: Colorado (multiple locations), 9786 S Holland Street
This race has passed
The 2026 running was Sunday, June 21, 2026. No 2027 date is announced yet — this page updates daily as the organiser posts one.
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Past editions
Colorado Mountain Half+ Series 2026 — ran
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Frequently asked
- When is the Colorado Mountain Half+ Series?
- The Colorado Mountain Half+ Series most recently ran on Sunday, June 21, 2026. A new date has not been announced yet — this page updates daily as the organiser posts one.
- Where does the Colorado Mountain Half+ Series start?
- The Colorado Mountain Half+ Series starts at Colorado (multiple locations), 9786 S Holland Street in Littleton, CO.
- What distances does the Colorado Mountain Half+ Series offer?
- The Colorado Mountain Half+ Series offers Half Marathon.
Listed on Race Roster. 1 past edition recorded. Race details are the organiser’s — confirm the date and start time with them before you travel.