in its 15th year, the Colfax Marathon Partnership is a nonprofit 501c3
with the mission of producing the premier marathon weekend in the
Mountain West Region, committed to community, philanthropy, and fun.
Originally created by the cities of Denver, Lakewood, and Aurora to
recognize Colfax Avenue, the longest main street in America; it’s
Denver’s only marathon. The race has grown to be a nationally
recognized event featuring unique courses incorporating the iconic
landmarks of the Mile-High City.