The Mammoth

The Mammoth

The Mammoth is a footrace through the Eastern Sierra, starting and finishing in Mammoth Lakes, California. The route is a loop circumnavigating a caldera. The course passes alpine lakes, abandoned mines, fall foliage, pine forests, and the Glass Mountains. It also goes through high desert terrain, volcanic rock expanses, a large Jeffrey pine forest, and past the tufa towers of Mono Lake. The race begins and ends with summits of Mammoth Mountain, offering views from 11,053 feet.

The race offers prize money for the first, second, and third place female and male finishers. A mandatory race check-in and runner briefing happens in the Village Plaza the day before the start. The event start line has coffee available for runners. The overall cutoff time is 108 hours.

The event operates under permit on National Forest land. Registration is managed via a waitlist system as spots become available. Visit the organization's website for the most recent information.