The Vertical KM covers 1000 metres of vertical ascent over 3.8 kilometres, a steep and fast climb for the extremely fit.
In 2013, the Vertical KM became an official race on the ISF (International Skyrunning Foundation) calendar of international events - Skyrunner Trail Series.
The race limited to 400 runners.
Sign up to take part via the website link above or come along to watch!
What to see
Location: Chamonix / Mont Blanc Valley
Event: Races / Competition | Sports Event
Venue Style: Open Air / Outdoors