This is a 70km trail running race with 5,400m elevation gain taking competitors up onto the Grande Motte glacier in Tignes.
There are actually a number of different lengths of races with the largest and hardest at 70km, then one of 39km, 19km and the vertical kilometre.
Finishing the race will give you points towards the UTMB.
The race is part of the European Skyrunning Championships.
Find out more by visiting the website.