Available distances
Races on the programme
| Race | Distance | Elevation gain | Finishers (last edition) |
|---|---|---|---|
| Blue Sky Trail Marathon | 27 mi | 3,510 ft | 200 |
| Blue Sky Trail Half | 13 mi | 7,920 ft | — |
About
The Blue Sky Trail Marathon takes place in Fort Collins, Colorado, at the foot of the Rocky Mountains' Front Range, on wild and rugged mountain trails. Unlike races that offer a menu of distances, this one keeps things simple with a single option: a full marathon of roughly 26.2 miles.
The course tests runners on demanding, unpaved terrain typical of Colorado's foothill trail systems, making it a straightforward but tough day out for anyone looking to take on a true trail marathon distance in one of the state's classic running towns.
Prepare for Blue Sky Trail Marathon with RunRun
An AI-generated training plan, adjusted every week based on your real sessions. Built around your goal, current level and race date.
- Personalized plan based on your VO2max, history and weekly availability
- Strava and Garmin sync: your sessions are analyzed and the plan adapts
- Target paces, long runs, key sessions: everything is calculated for race day
Races nearby
Other upcoming races around Fort Collins.
Blue Sky Trail Marathon & Half Marathon
Oct 17, 2026 · Fort Collins, CO · 0 mi away
14 mi · 27 mi
Resolution Run - Fort Collins
Dec 31, 2026 · Fort Collins, CO · 0 mi away
3.1 mi
The Colorado Marathon
May 2, 2027 · Fort Collins, CO · 0 mi away
26.2 mi · 13.1 mi · 6.2 mi · 3.1 mi
Wild West Relay
Aug 6, 2027 · Fort Collins, CO · 0 mi away
200 mi
Fall Equinox
Sep 20, 2026 · Fort Collins, CO · 1 mi away
13 mi · 5 mi
Horsetooth Half Marathon
Apr 18, 2027 · Fort Collins, CO · 1 mi away
13.1 mi