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Departure: La Combe de Longes (450m).
(S) Head up towards the castle through the village.
(1) Turn right at "Le Château" and continue along the path to the Bonnard farm, Croix de la Garde (581m, watch out for the dog tied up at the foot of the lean-to). Pass below the farm and continue along the road until you reach Croix du Trève (527m, distance: 3km). Go up the path opposite, passing to the right of the houses, then below the village of Marlin and continue to Croix de Marlin (657m).
Follow the path that dips to the right, passing in front of the "Rocher de Marlin" (legend), and descend this slightly zigzagging path (be careful, it is poorly marked). You will see the Couzon Dam at the bottom of the valley.
Continue, passing to the right of the only house in the hamlet of La Rente, continue along the concrete section, turn left and descend. At the Maison de l'Eau, cross the D30 road (350 m, lowest point).
(2) Walk along the dam wall and, at the end, immediately take the path that runs alongside the dam as close to the water as possible. Continue along this path to the end of the dam (be careful, there are a few difficult metres at water level), then take the grassy path on the right that climbs up to the village of Seyoux (450m). Cross the village uphill, turn left, pass to the right of the farm (dogs) and continue until you reach the Croix des Cerisiers (535m).
Take the path on the left which climbs for 15 to 20 minutes, the hardest part of the route, and at the top and on the right at a fork, you will find a table where you can enjoy a welcome snack. Continue on the path on the left which climbs slightly, a good path to the Croix du Mazet (650m). Cross the D7 road and climb the path opposite (20 to 25 minutes) through the woods. At the top, on the plateau a few metres from La Croix de Montvieux (811m), a "period" bench awaits you for a well-deserved snack.
To return to the path leading to the D62 road at the Col de la Croix de Montvieux, walk past the restaurant, descend for 200m and take the first path on the left, the "Sentier Jean Jacques Rousseau". at the top (834m), turn slightly right for 100m, then left, passing in front of the "Plaque commémorative de Christian" (Christian's commemorative plaque), a hiker who died here in 2010 (a moment of reflection).
Continue downhill, pass to the right at the fork above the village of Grange Rouet (778 m), and arrive (either by road or by path) at the Col de Pavezin (650 m).
(3) At the crossroads on the front of the house next to the bar, the "Plaque de M Veloccio", walk along the right-hand side of this house and take the Jean Jacques Rousseau path at the corner, which goes uphill, then after a few metres on the right, continue to the Col de Grenouze (626m).
(4) Cross the car park, walk past the restaurant, continue along the D78 road for about 500m and, in the left-hand bend, climb the path on the right between two fields, then descend to the hamlet of Remilleux. In the middle of the hamlet, turn right (a few agricultural tools) and climb this stretch of road, then turn left at the fork, climb up to the paragliding or hang-gliding launch site on the right, descend to the hamlet of Chassenoud (540m), and take the road on the left to the last farm. Go down the path on your right and at the fork, turn left to the stream, take the road on the left, arrive at the village of Longes, pass in front of the old bread oven, then turn left into the alley, and finally left one last time, and you will be at the car park at the start (E).
Visorando Member
Difficult 
Easy 
