Half Marathons in Colorado

Name: Denver Colfax Marathon
Start: 2025-05-17
End: 2025-05-18
Location: Denver's City Park

Races by State
Colorado
Half Marathon

Browse Half Marathon races in Colorado, including upcoming races and races up to one year past their event date. Sort by highest rating or number of reviews to elevate the most popular races.

For each Half Marathon race, you’ll find key details, finisher ratings and reviews, photos, videos, related articles, race-day weather data and a link to register.

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Half Marathons in Colorado

Showing Half Marathons in Colorado

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