Blue Sky Trail Marathon

Blue Sky Trail Marathon
Date Oct 2025 (TBD)
Distance Half-marathon, Marathon
Course Type Trail

Video

Race Information

Taking place on the trails between Horsetooth Mountain Park and the Devil’s Backbone Open Space, the course takes you on a north-south tour of the easternmost hogbacks of Northern Colorado’s mighty Front Range. With 3,500 feet of elevation gain and an equal amount of elevation loss, the route offers a little bit of something for everyone. It is designed to appeal to both veteran trail runners and those looking to experience their first trail racing adventure. 

The course is 100% dirt and 90% sweet Colorado singletrack. The terrain ranges in difficulty from smooth dirt trail to technical rock gardens.

Advertisement

Participate in Running Research

Receive 2 FREE months of run training from our friends at RunDot


Invitation to Participate in Running Research

Participants receive 2 FREE months of run training.

The RunDot Project is a research initiative that helps RunDot quantify and enhance the performance gains that RunDot's Optimized Training delivers over training alternatives.

Learn more and apply using the button below.

Learn More

You Might Like These Runs

Looking for more races? Here are a few similiar runs in the near area that you might also like

Pace Calculator

Find your running pace and splits, and learn if you can outrun dangerous animals with the RunGuides run pace calculator.

Tell us your race tips