Course
Marathon, half marathon, 10K, 5K and a one-mile fun run all start and finish at The Island at Pelican Lakes in Water Valley, Windsor. Course maps and aid station detail are published separately in the runner handbook.
Key dates
- ★Race dayOctober 2027 · date to be announced
About
The Windsor Marathon offers a full marathon, half marathon, 10k, 5k, and 1 mile run events in Windsor, Colorado. Organized by the run.Windsor Race Series and miles.Beyond, it supports local nonprofits and builds community strength.
Save Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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October Trophy Series
Handicap starts on Aurora's Sand Creek Trail
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Des Plaines River Trail Races
Flat crushed-gravel trail race through forests and wetlands
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Long View Marathon and Half Marathon
Point-to-point marathon linking Fort Collins and Loveland
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.