Course
A certified flat one-mile dirt loop with essentially no elevation gain, run from the Colorado Youth Outdoors Swift Ponds Campus in Fort Collins. Solo runners take on 24, 12 or 6 hours, and relay teams of up to six can share any of the three formats.
Key dates
- !RegistrationOpen now
- ★Race daySat 7 Nov 2026
About
A 24-hour running event on a flat, one-mile dirt loop at Colorado Youth Outdoors' Swift Ponds Campus in Fort Collins. Participants can choose to run for 24 hours, 12 hours, or 6 hours and accumulate as many miles as possible.
Save Colorado 24 Hour Run to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
-
Bell Ringer 2-Miler
Loveland's Veterans Day bell-ringing tradition, on foot
-
City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)
Rocky Mountain views over Denver's City Park lake
-
Backcountry Wilderness Half Marathon
Singletrack through the Highlands Ranch Backcountry
-
A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.