Sourced from predicthq.com - The HOKA Ultra-Trail du Mont‑Blanc (UTMB) is a premier mountain ultramarathon festival centered in Chamonix‑Mont‑Blanc that attracts elite and recreational trail runners worldwide. A series of races circumnavigate the Mont Blanc massif across France, Italy and Switzerland, ranging from shorter trail events to the iconic main UTMB race of roughly 171 km with more than 10,000 meters of elevation gain. The event is notable for its high‑altitude, technically demanding terrain, unpredictable alpine weather, and its selective entry process that combines qualifying points and a lottery system.