This year serves as the the second year of our Ambassador program, and just like everything else... we are always looking to improve our programs, community outreach, and education of the CO trails, so it is our pleasure to offer up FREE training runs throughout the year, which will either be hosted and/ or lead by an ERS staff member or ERS ambassador.   Our dedicated staff and Ambassadors are experienced trail runners that live in the Denver or Fort Collins Metro areas.


For more information on each of our Ambassadors, please feel free to visit the AMBASSADOR PAGE.   


Are you completing your first trail race this summer?

Or maybe you are looking for some camaraderie, expert coaching, or to explore new trails and meet new running buddies?

Join the Life's 2 Short Fitness trail running group just for women!  

In this 12 week program starting on April 1st, you will join other ladies for twice weekly coached runs at different trails all across the front range leading up to the Endurance Race Series',  Eagle Half Marathon on June 24th with options for shorter distance races too. 

Learn more/register now soon, spaces are limited!  Visit us @


The Endurance Race Series is proud and honored to work in, and support one of the best communities in the category of endurance sports. We are always looking for ways to build and educate the trail running community, get new or novice runners involved, and how to  help those experienced trail runners find ways to train for their upcoming events.

In 2017, we are proud to announce our own set of training runs through our Ambassador program, and our new training partnership with Life's 2 Short Fitness, a trail running training group designed for women. We hope that these programs are helpful in your training and you are able to join one of our ERS Ambassadors on a training run this year. 

Training Group/Programs

Train For an ERS Event

Trail Running Tips 

provided by:  

Hydration Tips For Your Training 

Date: Saturday May 13th, 2017

Location: Rock Creek Trail (Hunter Douglas Biz Park)

Meeting Address: 1 Duette Way, Broomfield, CO 80020

Meeting Time: 7:45AM

Start Time: 8:00AM

Terrain: Dirt Trails, rolling hills 

Distance: 7 Miles

Ambassadors: Colton C. 

Full Training Run Details

Ambassador Training Runs