From the Tourist Information Office in Selva you warm up along the route of the old railway line. You follow the road up to Plan de Gralba for approx 2.5 km: From Plan de Gralba the climb gets steeper up to the Passo Sella, first on a gravel road, then along a fantastic trail with tight curves leading up to the lower reaches of the “City of Stone Shortly after the car park for the cable car up to the Forcella del Sassolungo gorge, the long descent towards Canazei and Campitello starts at the Valentini Hut In Campitello, at the beginning of the Val Duron, the route changes abruptly from downhill to uphill, with a forest trail. After a short downhill stretch you reach the very traditional Lino Brach Hut at the side of the path. The tour now continues further up the Duron Valley to the Duron pass. The tour, leads towards the Sassopiatto. Now comes a descent of 160m.The next 12 kilometres are largely downhill until, tired but happy, you return to your starting point in Wolkenstein/Selva.