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OCC is a 60.0 km trail race of HOKA UTMB Mont-Blanc 2026 in Orsières, France. The race starts on August 27, 2026 at 08:15 AM. It starts in Orsières and finishes in Chamonix. The time limit is 14 h 30 min.
The course climbs 3500 m+. With 58 m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 41% of the distance is uphill, 37% downhill and 22% flat. The longest climb runs 4.8 km at an average 14.8% grade (712 m of vertical). The longest descent runs 4.4 km at 12.0% (531 m of vertical). The steepest climb averages 33.4% over 0.4 km. The steepest descent drops at 34.1% over 0.5 km. Surface: 66% trail, 16% road, 9% smooth, and 8% technical. Flat-equivalent effort: 83.6 FlatKM.
The highest summit on the course is L'Arolette (2330 m), 34.7 km from the start. Other named summits along the route: Tête de Balme (2321 m).
Trekking poles are strongly recommended: about 7.7 km of the course is steep enough for them to pay off.
Quad damage risk is moderate (index 41 of 100), with 37% of the load in the first half: 2 descents deserve a plan and a couple of downhill sessions before race day.
Historically on race day, start temperatures range from 11°C to 20°C, around 14°C at the highest point; the chance of precipitation is about 46%. Heavy rain of 10.0 mm or more falls on about 11% of days around this date.
1,563 finishers completed the 2026 edition. Men's winner: Frédéric Tranchand (France) in 5:10:08. Women's winner: Lauren Gregory (United States) in 6:08:07.
This page has the full results and splits, interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for OCC.
Other distances of HOKA UTMB Mont-Blanc 2026·····
Other editions of OCC
Official websitemontblanc.utmb.world
