Blue Sky Trail Marathon & Half Marathon

Welcome to the Blue Sky Trail Marathon & Half, Fort Collins's original trail marathon. This event takes place on the trails between Horsetooth Mountain Park and the Devil's Backbone Open Space, offering a scenic tour of Northern Colorado's Front Range hogbacks. With significant elevation changes, the course caters to both veteran trail runners and newcomers seeking their first trail racing adventure. The route features 100% dirt tracks, predominantly on sweet Colorado singletrack, ranging from smooth trails to technical rock gardens. Post-race festivities include a popular barbecue and sponsor giveaways, ensuring a memorable experience for all participants.