The starting point is in Saint-Jean-de-Bournay, a large village in Isère located between La Côte-Saint-André and Vienne. Park in the swimming pool car park, south of the village, along the D518, near a roundabout.
(S/E) Turn your back to the roundabout and look north. Take the street that runs alongside the café, Avenue de la Libération. Follow it until you reach a fork. Take the right-hand branch (no entry). You will see yellow markings. A little further on, on the right, you will see aluminium barriers. They frame a small canal (the Gervonde). Walk along the waterway in the "Toile à Voile" passage. On the right, you will find an old educational sign describing the engineering structures since the Étang de Monjoux. You will come to a T-junction. Turn left.
(1) You will cross Rue Bayard. Continue straight ahead on Passage du Chanisson. You will then cross Rue de la République and continue straight ahead on Route d'Artas. Ignore the road on your left until you reach a fork. Take the right fork onto Route de Bournay.
You will arrive at the pretty little Chapelle Saint-Pierre.
(2) Turn left. Very soon, you will come to a crossroads. Turn right onto Chemin des Crozes. Further on, at another fork, turn right again onto Chemin des Gamelières. You will still be following the yellow markings. Climb uphill until you reach the sign for "Les Gamelières - alt. 430 m".
(3) Ignore the path on the right that leads to Étang de Monjoux and continue along the wide dirt track towards Clos de la Barre. Along the way, in front of you on the right, you can admire the beautiful Étang de Monjoux. You will come to a road leading to a farm. Turn right onto Chemin des Hautes Gamelières. Continue along this small road, ignoring any turnings on the right or left, until you reach a junction of tarmac roads. You are now at the junction of Chemin des Crozes and Chemin du Bois.
(4) Cross over and climb fairly steeply opposite. Ignore a path on the left and another on the right. You will soon reach a T-junction, where you turn right (Chemin du Puits), then immediately left. You will still see the yellow markings, which will reassure you.
(5) Turn right towards three houses. Leave the road and take a dirt track that turns twice to the left and then further on to the right. You will come out onto a small tarmac road. Take it on the left. Then take the first small road that goes up to the right, which is Chemin de Mollie et Tout Vent (you will still see the yellow markings).
You will come to a sign for "Clos de la Barre - alt. 455 m".
(6) Stay on this small road, which turns quite sharply to the left, then to the right.
You will come out onto a district road.
(7) Take it to the left for a few metres, then cross it to take the dirt track opposite, marked in yellow. At a hunting platform, you will come across another path; continue straight ahead.
You will soon reach the sign for "Combe Bigot - alt. 470 m".
(8) Continue straight ahead towards Molèze. At the next crossroads, leave the yellow markings and continue straight ahead, along the woods, without markings. The path enters a small wood and quickly emerges again. You will reach a small tarmac road. Continue straight ahead and you will find the yellow markings again and very quickly a Y-shaped crossroads.
(9) Turn right at a house. Take the dirt track opposite, along the house. You will come out onto the Charantonnay road, at a tall iron cross. Cross over and continue straight ahead. You will come to a sign saying "Molèze - alt. 470 m".
(10) Turn left towards Saint-Jean-de-Bournay, ignoring the distance sign, and almost immediately turn left again onto a small road. At a fork, go right (Chemin de Montchâtain). Then ignore a small road coming from the left. The tarmac gives way to a beautiful dirt track. Descend to a hamlet. You will come to a road, which you take on the right. Go through a roundabout and continue straight ahead. At the 50 km/h speed limit sign, there is a footpath that allows you to avoid the cars.
(11) At a chicane, turn right onto Montée Constant. This is a dirt track. Follow it, even though it turns out to be a steep descent, until you reach Rue de la République. Cross it and continue straight ahead onto Rue du 11 Novembre. When you come to a house, take a first turn right then left chicane to take Route de Villeneuve.
(12) You will come out onto the Route Départementale 518 at a roundabout. Cross it to go to the bakery and take a small road on the left. You will pass over the Gervonde, which you followed on the way out, and return to the swimming pool car park (S/E).