Ultra Trail Oso Negro
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Ultra Trail Oso Negro 50K : English
The Ultra Trail Oso Negro 50K is a mountain trail race in Santiago, Nuevo León, that covers a specified course of 48.41 km with approximately 3200 m+ of elevation gain. The route departs from the town center of Santiago and includes sustained ascents to Puerto Gringo, technical descents toward Los Chorros and Cuartones, a crossing of the Cañón de las Ánimas, forested sections around El Manzano, and a final approach near the Cascada Cola de Caballo before returning to the town plaza.
Key event facts: the official distance is 48.41 km, the maximum allowed time is 12 hours, and the field is limited to 300 runners. There are five aid points along the route located roughly every 10 kilometers; some points provide water and fruit. Mandatory equipment checks are enforced and include a hydration pack, a lamp with spare batteries, an electronic map on phone or watch, a whistle, and a thermal blanket; poles and gloves are optional. The listed registration fee is 2,200 MXN and the minimum participant age is 18.
Prizes: trophies are awarded to the top three finishers in each category and to the top three overall, with the awards ceremony held in the Plaza de Santiago. The hotel listed as the event base is Hotel Hacienda Cola de Caballo, near the last control point. Visit the organization's website for the most recent information.