After Aneto, the teams will have to turn NW to cross the main ridge and touch the 13 km radius around the Pic du Midi de Bigorre. This is the third time this TP will be used by the race.

The distance between TP 3 and 4 looks short, but will be some of the most remote and difficult to negotiate, most of the way being above 3000m.

The optimal distance of the turnpoint is the famous peak of l’Arbizon.