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Discover everything you need to know about the 2025 colfax marathon! The denver colfax marathon & half marathon with detailed race descriptions, registration, course maps, elevation, and past results. Choose the marathon, half marathon, urban 10 miler, marathon relay on sunday or the 5k on saturday.

Colfax 5K, Urban 10 Miler, Marathon, Half Marathon And Marathon Relay.

Denver colfax marathon, half marathon distance: Get date, distances, location, videos, registration links, and other.