Colfax Half Marathon
Race Day Weather
Cool start — fast day potential, big temp swing
A cool 44°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 66°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.
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Race Info
The Colfax Marathon Half Marathon covers 13.1 miles through Denver, starting and finishing in City Park beside Ferril Lake. The route follows Colfax Avenue past the Cathedral Basilica and the State Capitol, then crosses Civic Center Park, the 16th Street Mall and downtown before passing Denver Fire Station #1. It runs through the Denver Zoo, and returns on 17th Street and 17th Avenue to finish in City Park.
