August 13, 2017

Eagle Half

Endurance Race Series

Welcome to the Endurance Race Series, Colorado's Largest Trail Race Series...

The Endurance Race Series is the home of ten (10) different trail race events extending from the front range  to the mountains.  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, with a family friendly atmosphere, and fun post race celebration!!

​The Endurance Race Series is focused on the half marathon and 10K distances primarily, but for those runners that like the shorter courses we also offer a 5K distance option at six (6) of our races, which include:

  • Westminster
  • Longmont
  • Black Hawk
  • Beaver Creek 
  • Snow Mountain Ranch
  • Louisville

For more information on registration and our different "Race Passes" then CLICK HERE

June 10, 2017

July 29,  2017

April 29, 2017

July 23, 2017

Sept 23, 2017

Oct 8, 2017

June 24, 2017

August 20, 2017

Sept 16, 2017

"Kid's Dash" presented by 

Running is not just for adults... get the kids involved!

The Endurance Race Series is excited to offer our very popular "Kids Dash" presented by the Western Dairy Association for all kids 10 years and under.  The "Kid's Dash" is available at each of our races and will normally be measured out between a quarter mile and a half mile depending on the ages of the kids that are participating. 

Kids registration is $10 and

available onsite, race day only,

and includes a kids medal. β€‹


2017 Event Schedule