Mont-Blanc 10K is the 10.0km trail race at Mont-Blanc Marathon 2026 (Chamonix, France). The race starts on June 27, 2026 at 10:30 AM. It starts in Chamonix. The time limit is 2 h 30 min.
Short race: go all out.
The course climbs 325m+. With 33m/km of climbing, this is a rolling, mostly runnable course. By gradient, 25% of the distance is uphill, 35% downhill and 40% flat. The longest climb runs 10.0km at an average 2.8% grade (285m of vertical). The steepest climb averages 22.8% over 0.5km. Surface: 93% trail and 6% smooth. Flat-equivalent effort: 11.5 FlatKM.
The course is runnable enough that trekking poles are not needed.
There is too little runnable descent to damage the quads: plan the race around climbing and fuelling.
On race day, start temperatures have historically ranged from 15°C to 26°C, with around 20°C at the highest point; the chance of precipitation is about 47%. Heavy rain of 10.0mm or more falls on about 7% of days around this date.
1,841 finishers completed the 2026 edition. Men's winner: Lukas Ehrle (Germany) in 37:15. Women's winner: Grace Whelan (Great Britain) in 47:42.
This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Mont-Blanc 10K.
Other distances of Mont-Blanc Marathon 2026Mont-Blanc 90K (88.0km)·Mont-Blanc 42K (42.0km)·Mont-Blanc 23K (23.0km)·Mont-Blanc KM Vertical (3.8km)
Other editions of Mont-Blanc 10K2027
Official websitewww.marathonmontblanc.fr/en
