Taking place on the trails between Horsetooth Mountain Park and the Devil’s Backbone Open Space, the Blue Sky courses take you on a north-south tour of the easternmost hogbacks of Northern Colorado’s Front Range mountains. With a moderate amount of elevation gain and loss and a variety of terrain, the route offers a little bit of something for everyone. It is designed to appeal to both veteran trail runners and those looking to experience their first trail racing adventure.
Race Date: Sunday, 19 October 2025
Location: Colorado, United States
Nearby City: Fort Collins
Event 1:
Race Length: 13.3 miles (21.4 km)
Elevation Gain:
1,700 feet (+128 ft/mi)
Elevation Loss: 1,700 feet (-128 ft/mi)
High Point: 6,800 feet
Low Point: 5,400 feet
95% dirt trails, 5% dirt roads, 0% paved
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Additional Information
Website URL: https://gnarrunners.com/blue-sky-marathon/ (opens new window)
Race Director: gnarrunners
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Race Reports For Blue Sky Trail Half Marathon
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Race Reports
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Submitted On: 1/24/2025 By: gnarrunners (Race Director)
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