Blue Sky Trail Marathon & Half Half Marathon is the 22.0km trail race at Blue Sky Trail Marathon & Half 2025 (Fort Collins, United States). The race starts on October 18, 2025.
The course climbs 600m+. With 27m/km of climbing, this is a rolling, mostly runnable course. By gradient, 14% of the distance is uphill, 11% downhill and 75% flat. Surface: 73% trail. Flat-equivalent effort: 22.7 FlatKM.
The course is runnable enough that trekking poles are not needed.
There is too little runnable descent to damage the quads: plan the race around climbing and fuelling.
On race day, start temperatures have historically ranged from 6°C to 17°C, with around 14°C at the highest point; the chance of precipitation is about 19%.
This page has a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Blue Sky Trail Marathon & Half Half Marathon.
Other distances of Blue Sky Trail Marathon & Half 2025Blue Sky Trail Marathon & Half Marathon (42.0km)
