Ultra-Trail du Mont-Blanc: 171km circumnavigation of the Mont Blanc massif traversing France, Italy and Switzerland. The most prestigious ultra trail race in the world.
UTMB Mont-Blanc 2026 features an elite field rated 98/100, with Courtney Dauwalter 🇺🇸 emerging as the clear frontrunner at 42.4% win probability. Jim Walmsley trails at 22.1% and will need a tactical masterclass to contend.
The primary battle is between Courtney Dauwalter and Jim Walmsley, separated by just 20.3 percentage points. The USA 🇺🇸 has 2 athletes in the top 3, adding tactical depth to their campaign. Kilian Jornet 🇪🇸 at 17.4% is the dark horse — capable of disrupting if the leaders neutralize each other.
Cool conditions (7°C / 44°F) are favorable for fast times. Light rain skies should allow athletes to push the pace early. Watch for WNW 7 mph (11 km/h) impacting the exposed sections of the course.
Courtney Dauwalter to win. Early projection — form and fitness closer to race day will refine this call.
Course record: 20:36:15 / 22:17:34. Chamonix, France (via Italy & Switzerland) hosts this 171 km event.