Mammoth Trail Fest
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Mammoth Trail Fest runner information
Mammoth Trail Fest is a multi-race trail weekend based at the Village at Mammoth Plaza and on USFS land in the Mammoth Lakes area. The program includes Dragon’s Back Ascent, Tenkay, the Mammoth 50K, the Mammoth 26K, and a kids 1K, with courses marked by colored flags, ribbons, chalk, and signs.
Aid station support varies by race: Dragon’s Back Ascent has no aid, Tenkay has one aid station, the 50K has six aid stations, and the 26K has four. Aid stations will offer a mix of sweet and savory items, real food, GU products, water, and Summit aid will include pancakes with gluten free and vegan options to be announced.
Safety and race rules: no littering, no course cutting, bibs must be visible, poles are allowed, and animals are not permitted on course. Medical staff, Mammoth Hospital partners, and local patrols support a formal emergency action plan. Runners are recommended to carry a cell phone, at least 1 L of fluid, extra layers, and an emergency blanket; organizers may require a cold weather kit if conditions demand.
Logistics include designated drop bag trucks for DBA, 50K, and 26K with returned bags staged near the Village wood chip area and Palisades Room for leftovers. Pacers are not allowed; crews are allowed with site restrictions. The event is cup-less and features Terracycle collection for sports nutrition wrappers, free town shuttles, and parking options at Canyon Lodge, Eagle Lodge, and Main Lodge. Professional chip timing using B-tags will determine age-group awards; gun time is used for prize money. Top overall finishers receive stated cash prizes and age-group awards are given in ten-year brackets. Visit the organization's website for the most recent information.
