(S/E) Start at the Promenade des Princes de Monaco, which runs alongside the Ouvèze river. Follow the Ouvèze towards the Gorges d'Ubrieux.
(1) Just after the bridge over the river, turn left (yellow signpost) to follow the Ouvèze, pass the stadium and join the departmental road at Font d'Annibal.
Continue left along the departmental road, admiring the Gorges d'Ubrieux.
(2) Just after the bridge that crosses the river again, turn left onto the small road called Les Péchières. Follow the yellow signs and take the left-hand track shortly after the last houses. The path then climbs up the mountainside through a forest of oak and pine trees (towards Linceuil).
When the path reaches the foot of a cliff, continue to the left. Keep climbing until you reach an open area.
(3) Pass the ruins of the Bergerie des Cades and turn at the bottom of the valley where the path makes a hairpin bend before reaching the Col de Milmandre and its panoramic view.
(4) At the Col de Milmandre, rejoin theGR®9, which will take you back to Buis-les-Baronnies.
TheGR® then runs alongside rocky outcrops, which it crosses without any difficulty at the Col de Malpertuis.
(5) Continue downhill. You will come to cultivated areas with olive trees, cherry trees and vines before reaching a track on the right that leads to the small road to the Col d'Os, which you take to the right.
(6) Stay on this road (even when theGR® turns sharply to the left), admiring Mont Ventoux, and continue downhill until you reach the houses.
All that remains is to return to the car park via the small streets and squares of the village (S/E).