The whole course sits at 2,400m (8,000ft) and climbs higher. Every effort is in thin air, so Mammoth Tuff is far harder than its numbers admit.
A single-day gravel race on the volcanic pumice and dusty forest roads around Mammoth Lakes, with 2,286m of sustained high-country climbing across the 161km route. The whole course sits above 2,400m, so the altitude, not the gradient, is what caps the effort.
Highs around 21°C and lows around 5°C, but it has dropped to -6°C. Rain on 6% of days. Pack for the cold end, not the average.
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.



