Mammoth Lakes, United States · September 20 – 21, 2025
Mammoth Trailfest 2025 is a trail running event in Mammoth Lakes, United States, held on September 20 – 21, 2025, with 2 races: Mammoth Trailfest 50k (50.0 km) and Mammoth Trailfest 26k (26.0 km).
| Race | Distance | D+ / D− | Start | Status |
|---|---|---|---|---|
| Mammoth Trailfest 50k | 50.0 km | 2133 m+ | September 20 | Scheduled |
| 26.0 km | 1064 m+ | September 20 | Scheduled |
