During the last few years, the UTMB has become the one of the most popular Ultra trails in the world.
The event offers 5 races of different locations, length and difficulty around the highest mountain in western Europe : the Mont-Blanc.
To take part in one of the races, runners have to collect qualifying points while running preliminary races all over the world during the 2 previous years. As the number of participants is limited, a lottery in then organized to select the participants among the runners with enough qualifying points.
The event is now part of the Ultra-Trail® World Tour.
This is the second race of the weekend after the PTL.
It starts in Courmayeur in the Aoste valley and follows the GR paths of Mont-Blanc, Beaufort and Tarentaise to get to Chamonix where the finish line is located.
On the way, runners will climb several passes above 2,500m : Arête du Mont-Favre (2435m), Col Chavannes (2603m), Col du Petit Saint-Bernard (2,188m), Passeur de Pralognan (2,567m), Col de la Gitte (2,322m), Col du Tricot (2,120m)
The race was added to the event in 2014. It goes from Osières to Chamonix.
This is the shortest race of the event.
The races starts in Courmayeur in the Aoste Valley in Italy and follows the GR paths to get to Chamonix.
Contrary to the TDS, the runners will head North when they leave Courmayeur.