The countdown is on for the Blue Sky Marathon on Oct 17, 2026, a flagship USA race held in Fort Collins, Colorado, USA. Runners follow a rugged (22mi dirt singletrack, 3mi rocky singletrack, 2mi dirt road) out-and-back course, starting and finishing at the Blue Sky Trailhead. Using the trails between Horsetooth Mountain Park and the Devil's Backbone Open Space, the Blue Sky course is a north-south tour of the easternmost hogbacks of Northern Colorado's Front Range mountains.
🏃 Why Run This Race
- Challenging hilly terrain that rewards strong, well-trained runners
- Off-road trail experience through stunning natural surroundings
- Simple out-and-back layout that's easy to navigate
- Well-organised aid stations and on-course support throughout
- Welcoming local running community in Fort Collins, Colorado
🏁 Race Distances & Events
- 26.2M trail run
📅 Event Details
- Date: Oct 17, 2026
- Location: Fort Collins, Colorado, USA
- Available distances: 26.2M trail run
💡 Runner Tips
- Train with hill repeats and strength work in the weeks leading up to race day
- Wear grippy trail shoes and bring a hydration pack for longer distances
Pace yourself, soak up the atmosphere, and enjoy every kilometre. The Blue Sky Marathon is more than a race, it's a celebration of running. Reserve your bib early and join one of USA's standout 2026 events.