Blue Sky Trail Marathon & Half Marathon
- Date Sat 18th October 2025 - Sun 19th October 2025
- Time 7:00AM EST
- Location Fort Collins, Colorado
- Price $96.40 - $117.60
- Races 2 races
- Distances Half Marathon
Event summary
Get ready for an unforgettable running experience at the Blue Sky Trail Marathon & Half Marathon, taking place on the weekend of October 18-19, 2025, in the stunning landscapes of Fort Collins, Larimer. As the original and only trail marathon in Fort Collins, this event invites runners of all levels to embark on an exhilarating journey through the picturesque trails that connect Horsetooth Mountain Park and the Devil's Backbone Open Space.
Participants can choose between the challenging marathon, which features a significant elevation gain/loss of 3,500 feet, or the half marathon with a more manageable 1,800 feet of elevation. The course consists of 100% dirt trails, with a delightful 90% being Colorado's famous singletrack, ensuring a thrilling adventure for both seasoned trail runners and newcomers alike. With a generous nine-hour cut-off time, everyone has the opportunity to savor the breathtaking scenery ranging from smooth dirt trails to technical rock gardens. After crossing the finish line, celebrate your accomplishment with delicious barbecue and exciting sponsor giveaways. Don’t miss this chance to experience the beauty of Northern Colorado while challenging yourself in the great outdoors!
Participants can choose between the challenging marathon, which features a significant elevation gain/loss of 3,500 feet, or the half marathon with a more manageable 1,800 feet of elevation. The course consists of 100% dirt trails, with a delightful 90% being Colorado's famous singletrack, ensuring a thrilling adventure for both seasoned trail runners and newcomers alike. With a generous nine-hour cut-off time, everyone has the opportunity to savor the breathtaking scenery ranging from smooth dirt trails to technical rock gardens. After crossing the finish line, celebrate your accomplishment with delicious barbecue and exciting sponsor giveaways. Don’t miss this chance to experience the beauty of Northern Colorado while challenging yourself in the great outdoors!
Organiser's Description
Welcome to the Blue Sky Trail Marathon & Half, Fort Collins's original and only trail marathon.
Taking place on the trails between Horsetooth Mountain Park and the Devil's Backbone Open Space, the course takes you on a north-south tour of the easternmost hogbacks of Northern Colorado's mighty Front Range.
The marathon boasts 3,500 feet of elevation gain/loss, while the half marathon checks in at 1,800 feet, and 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. The generous nine hour cut-off should ensure a successful day for everyone.
The course is 100% dirt and 90% sweet Colorado singletrack. The terrain ranges in difficulty from smooth dirt trail to technical rock gardens. A small portion of the route is on smooth dirt road (no motor vehicle access) and gravel bike path, with the meat of the running done on the beautiful and distinctive redstone hardpack of the Blue Sky Trail.
After the race, kick back and enjoy the always-popular barbecue and generous sponsor giveaways.
Taking place on the trails between Horsetooth Mountain Park and the Devil's Backbone Open Space, the course takes you on a north-south tour of the easternmost hogbacks of Northern Colorado's mighty Front Range.
The marathon boasts 3,500 feet of elevation gain/loss, while the half marathon checks in at 1,800 feet, and 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. The generous nine hour cut-off should ensure a successful day for everyone.
The course is 100% dirt and 90% sweet Colorado singletrack. The terrain ranges in difficulty from smooth dirt trail to technical rock gardens. A small portion of the route is on smooth dirt road (no motor vehicle access) and gravel bike path, with the meat of the running done on the beautiful and distinctive redstone hardpack of the Blue Sky Trail.
After the race, kick back and enjoy the always-popular barbecue and generous sponsor giveaways.
Blue Sky Trail Marathon & Half Marathon