The path to the nothern limits of the Valle del Sarca is long but not difficult. From the bridge in Arco the path follows the right side of the river and the high cliff of the castle. The first stretch of the path, which is surfaced, passed through Prabi where it is worthwhile paying a visit to the old church of Saint Apollonaire and Saint Paul’s Hermitage. After passing by the Roman bridge on the right at Ceniga, the path becomes rougher, but never demanding, before finally arriving at the “Ciclamino” motor-cross circuit at Pietramurata. Worthy of note are the smooth rock face of Monte Brento and the “Parete Zebrata” (zebra rock face), both highly popular as rock faces for traditional climbing practice.
After crossing the state road, from the centre of Pietramurata the return path follows a dirt track along the opposite side of the River Sarca, skirting the Marocche bio-tope, a rocky post ice-age desert. After a brief stretch on surfaced road, following the old provincial road through the village of Dro in a southerly direction, there is a junction with the Gardesana Occidentale (S.S. 45bis) where the new cycling path along the River Sarca begins on the right and leads back to the departure point.