Departure from Château du Cros, Route du Cros between Coussieux and Les Épars. The château is at the corner of the crossroads; park to the south along the road.
(S/E) Head south, climb towards the Bois des Cros, continue straight ahead and enter the forest. Walk past the farm on your right and continue straight ahead. At the next crossroads, turn right at the end of the climb.
Continue, passing a house on your right below, and continue for about 150 metres.
(1) Take the path on the left, follow this path which climbs slightly backwards, then turn right and leave the path which continues straight ahead. Join the Chemin de La Faite, which is the Mallegarde road.
(2) Turn right (GRP® Drôme des Collines) and continue for a little over 1 km, ignoring the paths that branch off to the right and left. At the road, turn left and join the D161.
(3) Cross and continue straight ahead on the D301. Turn right onto the path to the campsite and quickly leave it to continue straight ahead for about 1 km.
(4) At the crossroads with four paths and a large tree on the left, leave theGRP® Drôme des Collines and turn right. After 200 m, turn right again towards the farm to pass in front of it. Follow the Route des Sources on the right.
(5) 50 m before the buildings, take a path on the left that runs alongside the stream and leave the road. Descend towards the plain through the fields for about 500 m and turn right at the crossroads (elevation 230). Pass between the fields until you reach the crossroads with the D161.
(6) Cross it straight ahead. Continue for about 150 m and take the path opposite just before the hairpin bend. The path veers slightly to the right. Pass along the trees and in front of a house surrounded by forest. Continue to the next crossroads.
(7) Then turn left. Next, turn right and follow the hedge of trees to pass further to the left behind a house.
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(8) At the crossroads, follow Chemin de la Drystone Shelter to the left. At the T-junction, turn right onto Chemin des Grives. Pass the houses with a large shed and continue, then turn left behind the house. Continue to the right towards the hamlet on Chemin des Delphinières.
(9) Just after thefirst house, turn left to cross the fields for about 400 metres and turn right at the next path. You will reach Le Château du Cros (S/E).
