(S/E): From the small car park located near the Tour crossing, take the wide path opposite, heading south, which is well marked in yellow and red and leads to Champ Riant. Stay on this path.
(1): Reach the Champ Riant mast. Go through the barriers on the right and follow the steep path opposite, heading towards Col des Tourniers and Pas de la Pierre.
Stay on this path, marked in yellow and signposted, ignoring the various paths that cross it.
(2) You will reach a crossroads near a woodcutter's clearing. (At this point, pay close attention to the route as it is not very visible). Cross the track, leaving it on your right. Go up to the left for a few metres along the track used for woodcutting. Take the small path on the right (yellow marker slightly hidden on a tree). The slope becomes steeper. A little further up, at a crossroads, a yellow marker is placed on a tree between two paths. Follow the path uphill to the left. Continue. Go through a gate.
(3) You will reach a three-way junction and the Font Pourcel mast. Take the middle path, signposted Pas de la Pierre. The path becomes steeper, passes through four flights of anti-erosion wooden steps and crosses a small rocky passage. You will reach Pas de la Pierre.
(4) Follow the red and yellow marked trail to the left, climbing up to the ridge towards Pas Pourceau and Rochechinard. This is followed by a long stretch alternating between frequent passages through boxwood, easy rock passages and beautiful views of the Romans plain and the Vercors. However, you must remain attentive even though this trail is very well marked and does not present any particular difficulty. There are frequent ascents and descents, more or less close to the ridge line.
(5) Cross the Pas de l'Aulagnier mast. Continue on this path in the same direction towards Pas Pourceau and Rochechinard.
(6) At the next junction with the road leading to Rocher de Chantemerle, where the Beauregard TV transmission tower is located, follow this road to the right for a few metres before rejoining the ridge trail on the left. The forest becomes denser. A little further on, the path descends slightly towards the east, then climbs again through boxwood, sharp limestone pavement and rocks, passing close to an unsecured chasm, before rejoining the ridge and offering beautiful panoramic views. Continue along this ridge path to Pas Pourceau.
(7) At the Pas de Pourceau mast, descend to the left towards Pré de Cinq Sous. Walk along the meadow.
(8) At the next junction, the Pré de Cinq Sous mast, go through the gate and continue straight ahead towards Col des Marchands, following a wide track down to a junction (small cairn).
(9) At the cairn, turn 90° to the left and climb up the well-marked path to a small ridge. The path then descends towards Col des Marchands.
(10) At the Col des Marchands mast, go through the barrier and descend to the left, winding down a wide forest track marked in red and yellow to the Passage du Tour mast, at the side of the road. Go back up the road to the left for a few metres and you will find the car park (S/E).

