Head to the village of Lafare, then take the road on the left towards the Dentelles de Montmirail.
Park at the Saint-Christophe signpost, in one of the few spaces on the left-hand side of the road.
Yellow signposts
(S/E) From the Saint-Christophe signpost, with your back to Mont Ventoux, leave the tarmac road that goes straight towards Cassan and take the track that climbs to the right towards Château Neuf Redortier. Continue on this track, which goes around the small rocky outcrop on which the Chapelle Saint-Christophe is nestled. Stay on this ascending track for a good kilometre, ignoring all other paths on the right or left.
(1) At the end of a vineyard, ignore the paths on either side and continue straight ahead on a path that climbs uphill. Very stony at first, the path becomes more pleasant further on. At a crossroads, just before the houses, turn right towards the hamlet of Château Neuf Redortier.
Go around the first building on the left and join a paved road. Turn left and look for the Château Neuf Redortier sign 50 metres further up, at the crossroads in a bend.
(2) Turn left onto the road towards Le Pradas and continue on the tarmac, ignoring a path on your left. At the signpost for Les Pradas, leave the tarmac and turn right to continue climbing the wide path towards Les Clapas.
At Les Clapas, turn left towards Les Crêtes de Saint-Amand and continue for 20 metres until you see a path on the left.
Yellow + blue signposts
(3) Leave the track and turn left onto the path. Further up, ignore a blue signpost that climbs to the right to cut the bends. A few metres further on, the path turns right and begins to climb steeply to reach the first ridges and then the summit and its cross. The views are magnificent over the Dentelles de Montmirail massif, Mont Ventoux, the Drôme and the Rhône Valley.
(4) Take the path that passes to the left of the largest antenna and continue more or less flat through the forest. Pass several antennas on your left and you will reach a fork. Take the left-hand track through the boxwood and oak trees. The trail emerges from the woods, passes a hang-gliding launch site and reaches the ridges.
Enjoy the beautiful view and continue along this ridge line, which will take you back into the forest for a while. Leave two faint tracks that branch off to the right and, about 200 metres after leaving the woods, you will come to a wide path.
(5) Continue left on this path, which continues along the ridges and then turns right to descend. At a fork, leave the path on the right and continue left to reach a crossroads in the valley. After 10m on the left, the path joins the Pousterle signpost at the Pas du Loup.
(6) Follow the more or less flat path on the right towards Combe Fréou.
Yellow signpost
(7) At the signpost of the same name, turn right towards Portifiage. At the crossroads, continue straight ahead towards Cougne à Banne. Continue downhill, staying on the main path until you come out near a vineyard. Walk along the left side of the vineyard, make an S-bend and continue until you reach a tarmac road.
Yellow + blue signposting
Follow the blue markings and go around the house on the left to reach a crossroads.
(8) Leave the path that descends steeply to the left and take the road on the left that goes around a bend and continues straight ahead. 200 metres further on, turn right, leave two roads on your left and turn left to reach the signpost for Cougne à Banne.
(9) Continue left to the D90 and turn right to follow it to the crossroads next to the orientation table.
(10) Leave the road on your right and left and continue straight ahead towards Lafare reservoir. Cross the village of Suzette and continue down the road. Just after the last house, at the fork, leave the road on your left and take the right-hand track. Continue for about 600m until you reach a small dirt esplanade.
(11) Leave the road on your right and continue straight ahead on a path that leads through the vineyards. At the next crossroads, ignore the path on your right and the one on your far left. Continue straight ahead on the path that immediately turns to the left.
At the next fork, turn right along the vineyard at the edge of the forest. The path narrows and then begins a steep and rocky descent at times, arriving at the Lafare reservoir sign at the top of the village.
(12) Turn right onto Route de la Roque-Alric to join the D90, which crosses the village.
Turn left after a few metres to reach another crossroads. Take the road on the right that branches off below the D90, following the sign for Dentelles de Montmirail.
Follow this small road down towards the stream. Go up 100 metres, then take the path on the left that leaves the road for a while, runs alongside a house and then turns right. Leave two paths on your left and rejoin the same road. Continue climbing on the left until you reach the bend at the waterfall and the parking spaces.
Blue signposting
(13) At the bend, continue on the path on the left that goes up the left bank of the stream.
At the fork, go left and back, still following the blue trail, to see the waterfall up close.
Return to the fork and turn left to climb back up. After a short steep section where you will need to use your hands, the path approaches the road and turns left. A little more effort and the path comes out onto the road.
No signposts
Cross and take the wider path opposite that climbs up to the chapel. Ignore all the tracks that branch off to the left and continue to the Saint-Christophe Chapel.
(14) Descend to the road via the same route and turn right to return to the car park (S/E).