Why People Are Running Down Colfax This Weekend Taylor SienkiewiczMay 16, 2019 This weekend, Colfax Avenue, the Cherry Creek Trail, the Denver Zoo and Sloan's Lake will be filled with thousands of runners for Denver's Colfax Marathon. With... 303 MagazineColfaxFeaturedFitnessHealth + SportsLifestyle + CultureSportsThis Week’s Events2 min read