Fort Collins, United States · October 18 – 19, 2025
Blue Sky Trail Marathon & Half 2025 is a trail running event in Fort Collins, United States, held on October 18 – 19, 2025, with 2 races: Blue Sky Trail Marathon & Half Marathon (42.0 km) and Blue Sky Trail Marathon & Half Half Marathon (22.0 km).
| Race | Distance | D+ / D− | Start | Status |
|---|---|---|---|---|
| 42.0 km | 1100 m+ | October 19 | Scheduled | |
| 22.0 km | 600 m+ | October 18 | Scheduled |
