Mammoth TUFF takes place on Sat, Sep 19, 2026 in Mammoth Lakes, United States. The main route is 145 km.
- Date
- Sat, Sep 19, 2026
- Start
- Mammoth Lakes 🇺🇸
- Distance
- 145 km
- Climbing
- 2,250 m
- Level
- Open to all
A UCI Gravel World Series qualifier in Mammoth Lakes, California.
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
Your road to race day
Race day at Mammoth TUFF is 2 weeks away. This is how a coach divides that time. The first phase starts now.
01Taper1 week · Sep 6, 2026 – Sep 12, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
02Race week1 week · Sep 13, 2026 – Sep 19, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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