Train for Mammoth Trailfest 50K
Mammoth Lakes trail network. Nine thousand foot ridges in July. Four thousand five hundred feet of vert when the Sierra air is thin.
50K+5,391 ft-5,387 ft10 hours8,061 ft to 10,995 fttech 6/10Checkpoints per race bookhigh altitudeSierra east sideGTWS mapJuly
- Start8,061 ft
- High10,995 ft
- Low8,061 ft
- Finish8,064 ft
What PR Run builds for this start line
- Personalized plan from your baseline and this course profile
- Aid-segment fuel rehearsals tied to checkpoint spacing
- Structured gear kit from course intelligence
- Race-day pacing, crew notes, and race-morning brief
- Aid stations: 2 · longest gap ~25.2 km
- Mandatory kit items: 2
- Cutoff: 10 hours
The crux
Altitude from the gun at 7,800 feet (near mile 33)
Race details can change. Confirm current rules and logistics with the Official site.
Train for your race
Train for Mammoth Trailfest 50K
Course-specific plan, fuel segments, gear kit, and race morning for Mammoth Trailfest 50K.
Official siteCheck readinessPredict finish timeFull race guideFoot care guide