Denver Colfax Marathon

Name: Denver Colfax Marathon
Start: 2026-05-15T08:00:00.000Z
End: 2026-05-17T17:00:00.000Z
Location: Denver, CO, United States of America

Fri, May 15th, 2026 MDT at 2:00 AM MDT — Sun, May 17th, 2026 MDT at 11:00 AM MDT

Denver, CO, United States of America

Denver, Colorado

The Denver Colfax Marathon is celebrating its 20th anniversary with a weekend of races including marathon, half marathon, urban 10 miler, and 5K. The event will also feature the Colorado Half Marathon Showdown for elite runners. When: Friday, May 15, 2026 at 2:00 AM - Sunday, May 17, 2026 at 11:00 AM MDT

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