Parking is easy in the large car park opposite the town hall in Le Sappey-en-Chartreuse.
(S/E) Leave the car park, cross the A-road at the pedestrian crossing, and take the Route de la Charmette opposite. Then turn left onto the Chemin des Noisetiers, which marks the start of the ascent: there are signposts for the walk. Follow this path, which is tarmac-surfaced at the start, continuing in the same direction, pass through the hamlet of Jaillères, and carry on until you reach the hamlet of Le Bruchet.
(1) Cross the road; the path is slightly to the left and continues in the same north-easterly direction. You’ll reach a three-way junction.
(2) Ignore the path branching off to the left and continue to the right.
(3) Turn left and continue climbing the path, which winds several times before reaching Habert de Chamechaude.
(4) Continue left for about a hundred metres, then take the path on the right and follow the hiking signs to enjoy the view. Retrace your steps to rejoin the path you left earlier; this climbs a little further, then continues, following the contour lines almost exactly.
(5) Ignore the path branching off to the left towards the Roche Rousse viewpoint and continue to the Source du Bachasson, skirting the shoulder of Chamechaude.
(6) Take the descent, which is steep at first, leaving the path on your right that climbs to the summit of Chamechaude.
(7) Leave the path on your right that descends towards Saint-Hugues, and continue down towards the Col de Porte.
(8) Turn left onto the forest track heading due south, and follow it until you reach the Route du Col de Porte.
(9) Cross the road, follow it downhill for about a hundred metres, then turn right onto a small road that descends steeply. Continue, still heading due south, ignoring the turn-offs on the left. You will reach a four-way junction.
(10) Turn left onto the Chemin de l'Oie, continue to the main road, and turn right to return to your starting point (S/E).