![Blue-Sky-Trail-Marathon-logo-300](https://www.race-calendar.com/wp-content/uploads/2014/02/Blue-Sky-Trail-Marathon-logo-300-150x79.jpg)
The Blue Sky Marathon takes place on the trails between Horsetooth Mountain Park and the Devil’s Backbone Open Space in Fort Collins, CO. The course takes you on a north-south tour of the easternmost hogbacks of Northern Colorado’s mighty Front Range. With over 3,300 feet of elevation gain and an equal amount of elevation loss, […]