Our News:


Palmer Lake Half and 10K Rescheduled

The ERS has to postpone and reschedule the 2017 Palmer Lake trail race due to severe weather conditions, as more than 15" of snow fell in less than 12 hours. Additional snow is expected. 


ERS Welcomes New Sponsors

The ERS is excited to welcome CharcutNuvo and Gnarley Nutrtion to the series and Official Sponsors. CharcutNuvo is a food tent sponsor, while Gnarley Nutrition will be the Official Hydration Sponsor at the 2017 Aid Stations


Silverthorne Event Moved to Eagle

The ERS announced today that due to US Forest Service permitting restriction on the trails, they are unable to hold a race in Silverthorne and have moved the race to Eagle, CO. Same race date of June 24th, 2017. 

Meet's ATRA'S Event Standards

Finish Line Festivals 

The Endurance Race Series believes the finish line festival plays as big a part in the race experience as the run itself, so we always try and provide our runners and spectators with as much entertainment, food, and beer as possible at each and every race. Whether its a post-race wine tasting (Beaver Creek), Pancake Breakfast (Westminster), or just good old fashioned expo with sponsor demos, music and games, our festivals are family friendly and keep the party going all morning long. 

If you are a company looking to

join us  as an expo vendor at any

or all of our events you can find

our expo application HERE, or

email us and we are happy

to answer any of you questions. 

Our Mobile App:

About the Endurance Race Series

The Endurance Race Series offers trail races from Colorado's Front Range to its picturesque mountain towns and resorts.  With a total of ten (10) races now, runners have the opportunity to participate on some of the most challenging and scenic trails in Colorado. 

Whether you are looking for a stroll along the water (Longmont), some scenic single track (Beaver Creek), or a challenging hill course (Black Hawk), the Endurance Race Series prides itself on offering trail runners the BEST race experience and atmosphere in the race industry.

Every event within the Endurance Race Series offers multiple race distance options, great course support, kids races, and finish line festivals that the entire family can enjoy with music, food, raffles, and plenty of beer and/or wine

If you are new to trail running, don't you worry, we got you covered!! Our friends at the American Trail Running Association have put together some trail running tips and etiquette for those runners just discovering the trails... TRAIL RUNNING TIPS


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.

Mobile App is available for both IOS and Android phones... just search "Endurance Race Series"