The route starts off downhill from Castiglione d’Orcia to Bagno Vignoni, before continuing for a short stretch along the Cassia road and then heading to the right towards Spedaletto and uphill along the Orcia route. After crossing three intersections and passing La Vittoria, take the first street on the right to San Piero in Campo.
After around 14km you will get to the road which connects Sarteano to Radicofani, and here you should turn right towards Radicofani (2,5 km, uphill), situated in a beautiful position with panoramic views over the Val d’Orcia and the mountains of Cetona and Amiata. From Radicofani, continue downhill until S.S. 2 “Cassia”, where you should turn right to Bagni San Filippo, a thermal spa at the foot of Mt. Amiata. From here, head uphill for a while towards Campiglia d’Orcia, passing through the village of Zaccaria and then continue along a road with beautiful views until arriving back at Castiglione d’Orcia.