Mammoth TUFF took place on Sat, Sep 19, 2026 in Mammoth Lakes, United States. The main route is 145 km.
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- Date
- Sat, Sep 19, 2026
- Start
- Mammoth Lakes 🇺🇸
- Distance
- 145 km
- Climbing
- 2,250 m
- Level
- Open to all
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What this race demands
Mammoth TUFF requires sustaining a strong pace over 145 kilometers while managing 2250 meters of climbing at altitude in Mammoth Lakes.
Climbing volume
Accumulating 2250 meters of elevation gain across the 145-kilometer route requires consistent power output on sustained ascents and efficient pacing over the terrain.
High-altitude output
Racing in Mammoth Lakes exposes athletes to significant elevation, which reduces aerobic capacity and places a higher demand on oxygen utilization.
Endurance capacity
The combination of distance and climbing will extend event duration well past the multi-hour mark, requiring strong aerobic endurance and metabolic efficiency.
A target intake of 60 to 90 grams of carbohydrates per hour is recommended to sustain energy levels over the expected duration of several hours.
What would it take you?
Pick the level closest to yours for an estimate of finish time on this course and the training a solid preparation needs.
Estimated finish
6:20–7:35
Peak-week training
6–8 h/week
A model estimate from distance, climbing and level, not a promise. Conditions, drafting and pacing move it.
IntervalCoach turns those weekly hours into a concrete plan built around your actual fitness. Start with this race as your goal
Frequently asked questions
When is Mammoth TUFF?
Mammoth TUFF took place on Sat, Sep 19, 2026 in Mammoth Lakes, United States.
How long is Mammoth TUFF?
The main route is 145 km.
What does Mammoth TUFF demand?
Mammoth TUFF requires sustaining a strong pace over 145 kilometers while managing 2250 meters of climbing at altitude in Mammoth Lakes.
How much climbing does Mammoth TUFF have?
Mammoth TUFF has 2,250 m of climbing.
Who is Mammoth TUFF for?
Mammoth TUFF is open to all participants.
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