You can park on the side of the Voie Romaine or on Rue des Mésanges in Grézieu-la-Varenne, on the left of the D24 (after the 447 sign at Les Gaches).
(S/E) Follow the Voie Romaine with your back to the D24. Continue on the Voie Romaine, which then becomes Rue du Recret de Vaugneray, ignoring the first street that goes down to the left. Continue straight ahead, ignoring all streets and paths on either side. Turn left at a right angle and follow what is now the Chemin de Saint-Bonnet.
(1) After a sharp right turn, the street climbs and gradually turns into a dirt road.
Continue along this path, which climbs through woods and meadows until you reach a crossroads marked by a cross.
(2) At the cross, take the path on the left, which winds pleasantly down to Saint-Bonnet-le-Froid. Shortly before the top, ignore the path that descends to the left and continue towards the road.
(3) Opposite the old Château de Saint Bonnet le Froid, take the path on the right. At the first fork, make sure you continue on the path on the left. Follow the well-marked trail that will take you to the Col de la Luère (ignore the path that descends to the left towards the road and those that branch off to the right).
(4) At the Col de la Luère, follow the D24 road downhill to the right towards Lyon.
(5) At the bend, continue on the paved road that descends straight ahead opposite the road. The road gradually turns into a dirt track.
(6) Take the path that branches off to the right. It will take you to the rear of the Bouillon farm. The path goes around the farm and brings you to a paved road. Follow this road downhill for about 100 metres.
(7) A path branches off to the right. Take it. After crossing the small stream, it enters the forest. Stay on this path until it turns into a road and continue along it for 400 metres.
(8) At the crossroads, take the dirt track that descends slightly to your right. It will take you to the D70. Follow the departmental road to the right.
(9) Leave the road shortly after the bend and take the path that climbs up to the right. This path will take you back to your starting point (S/E).
