Join us for the exhilarating Blue Sky Trail Marathon & Half Marathon, taking place in the stunning scenery of Fort Collins, Larimer, on the weekend of October 17-18, 2026. This signature event invites runners of all levels to explore the breathtaking trails between Horsetooth Mountain Park and the Devil's Backbone Open Space. With a challenging marathon distance featuring 3,500 feet of elevation gain/loss and a half marathon option that boasts 1,800 feet, this race offers a little something for everyone, from seasoned trail runners to newcomers eager for their first adventure.

The course is a delightful mix of 100% dirt trails, with 90% of it consisting of sweet Colorado singletrack. Runners will encounter a variety of terrains, from smooth dirt paths to technical rock gardens, ensuring an unforgettable experience. With a generous nine-hour cut-off time, participants can take their time and soak in the stunning views of Northern Colorado's mighty Front Range. After crossing the finish line, don’t miss out on the post-race festivities, featuring a delicious barbecue and exciting sponsor giveaways. Mark your calendars for this must-attend event and gear up for an unforgettable trail running experience!