Prepare for an extraordinary challenge at the Jemez Mountain Trail Runs, set for May 9, 2026, in the stunning, high-altitude terrain surrounding Los Alamos, NM. This race series, offering 50M, 50K, and 15M distances, has earned a formidable reputation as one of the toughest mountain ultras in the country, drawing runners to its technical trails and significant elevation changes. The courses take participants through the scenic Jemez Mountains, ascending from around 7,000 to over 10,000 feet above sea level, with the 50K and 50M featuring extremely steep climbs and descents, fallen trees, scree fields, and stream crossings. Expect breathtaking views of wooded, rocky forests, expansive mountain ridges, and meadows, as well as unique sections traversing old burn zones.

Starting and finishing at the historic Posse Lodge on North Mesa, runners will experience a race renowned for its challenging atmosphere and well-organized support. Aid stations, though numerous, have stretches exceeding five miles between them, and the event operates as "cupless," requiring participants to carry their own hydration systems. Past events have seen extreme weather, from heat and cold to rain, hail, snow, and lightning, leading race management to implement a mandatory gear policy to ensure runner safety. Typical race day conditions in early May often bring pleasant highs around 66°F and lows around 41°F, with only a 5% chance of precipitation, but runners should be prepared for mountain variability.

Beyond the grueling physical test, the Jemez Mountain Trail Runs offer a distinct cultural experience. Runners are treated to a pre-race pasta dinner and a post-race meal featuring Northern New Mexico cuisine. Finishers receive unique, one-of-a-kind handmade pottery awards crafted by a local Native American artist, a testament to the community spirit and regional charm that defines this challenging mountain adventure.