Mont-Blanc 10K is the 10.0km trail race at Mont-Blanc Marathon 2027 (Chamonix, France). The race starts on June 26, 2027.
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.
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.
This page has 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 2027Mont-Blanc 42K (42.0km)·Mont-Blanc 23K (23.0km)·Mont-Blanc KM Vertical (3.8km)
Other editions of Mont-Blanc 10K2026
Official websitewww.marathonmontblanc.fr/en
