The 72 kilometre route starts on the track the 103k, immediately hitting the mountainous group of Spiz di Mezzodi ', while discovering wild and uncontaminated territories. With the arrival at the Pramperet refuge (km 15.8, refreshment point 1 - 1857 m) you will enter the Dolomiti Bellunesi National Park, to then continue at the base of the peaks of the Tamer - S.Sebastiano, where you will need to climb steeply, as goats do, from the suggestive Vach lake. There you will meet the route of the 53k and will continue along that same path, to arrive at the rifugio San Sebastiano on the Duran pass (km 30.0 - refreshment point 2 - 1605 m). The pass marks a change of environment, the Moiazza and the Civetta mountains being colossal rocky sequences of the Dolomites.