The Blue Sky Marathon will start and finish at the Soderberg Trailhead in the Horsetooth Mountain Open Space near Fort Collins, CO. The route will run between Horsetooth Mountain Park and the Devil’s Backbone Open Space. The majority of the trail will be single track with a variety of terrain ranging from smooth dirt paths to very technical rocky sections. A small portion of the route will be on smooth dirt road and gravel bike path.

The total elevation gain for the route will be approximately 3,268 ft. Most of the course is rolling hills with a few moderate climbs.

We will continue to update this website with additional course details so please check back often for current information.

Course Photos

View of Horsetooth Rock heading north on the Blue Sky Trail

View of the Blue Sky Trail heading south towards Coyote Ridge

View of the Blue Sky Trail heading south from the Coyote Ridge trail junction.

View to the west from the top of the Indian Summer Loop

View of Devil’s Backbone from the south end of the Hunter Loop.

Additional Information:

• Course Description
• Course Map