The car park is located at the second hairpin bend after the village of Ruissas on the D65, where you can easily park 4 to 5 vehicles.
(S/E) Drive up the road for 50 metres and take the tarmac road on the left. After passing the Bousses farm, you will come to a crossroads.
(1) Keep right and continue along the track. The slope becomes steeper at times. Leave a path on your left and continue to the crossroads.
(2) Turn left and continue straight ahead (view of Mont Ventoux). You will soon reach another crossroads.
(3) Continue to the right: the track becomes steeper until the next junction.
(4) Turn right again for 800m and arrive at the crossroads below the Col de Chauvac.
(5) Turn right and climb to a summit at 1360m (splendid view of Mont Ventoux and the Baronnies to the south, Dévoluy and Barre des Écrins to the north). Head east-southeast along the ridge of the Plaine des Pins to reach the summit of Montagne de l'Arsuc (the highest point of the hike at 1,461m). Although the trail is well marked, it can be difficult to follow at times, as the yellow markers are sometimes few and far between. A few cairns help to follow the route.
(6) The descent is steep and rocky: caution is advised on this section, which leads to the Col de Perty after a few hundred metres.
(7) From there, the trail is unmarked. It starts again opposite the disused building at the wooden post, but the start is not easy to spot. Once you are on the trail, stay on the right-hand path. At the bottom of the valley, take the track on the right and you will find the yellow markings again.
(8) Continue downhill to the right, which will take you to the crossroads you passed on the way up.
(2) Turn left onto the same path to return to the car park (S/E).