09/12/2025 - 11:30am to 09/14/2025 - 11:30am
The fourth annual Mammoth TUFF will take place on September 12-14, 2025, with three distances to allow you to find your own version of TUFF. The short and medium courses will circle the famed caldera, while the long course will pass across the Volcanic Tableland, which was produced by the eruption thousands of years ago. The event has partnered with the Village at Mammoth Lakes to bring live music and a festival ambiance for the ultimate finish-line celebration.
Join us on Friday for official pre-ride registration and the Mammoth BUFF beer run. The BUFF registration page is HERE.
Stay tuned for free coffee at our Awards Ceremony and the world's largest gravel event raffle on Sunday morning.