Endurance Race Series

Welcome to the Endurance Race Series, and the home of trail running events

The Endurance Race Series is the home of 15 different trail race events in both Colorado and San Diego County.  Whether you are a competitive trail racer, an avid runner, or a trail beginner, our races have what you are looking for... Challenging, yet beginner friendly race courses, great mountain views, a family friendly atmosphere, and a post race celebration that will keep the party going all morning long!!

OUR MISSION
It is the mission of the Endurance Race Series to provide competitive, quality events to the runners in the trail running community, while providing an entertaining, relaxing, family friendly atmosphere to those spectators and sponsors in attendance