Blue Sky Trail Marathon

Blue Sky Trail Marathon & Half takes place in Fort Collins, Colorado, on trails between Horsetooth Mountain Park and Devil’s Backbone Open Space. The event offers Marathon (26.7 miles) with 3,500 feet of elevation gain/loss and Half (13.4 miles) with 1,800 feet. The course is 100% dirt, about 90% singletrack on redstone hardpack, with some dirt road and gravel sections, and is designed to appeal to both veteran runners and first-timers.

Runners encounter terrain from smooth trails to technical rock gardens, with deer, Abert squirrel, and golden eagle fauna. A 9-hour marathon and 6-hour half cutoff, followed by a meal and sponsor giveaways. Visit the organization's website for the most recent information.