The car park is accessible via a dirt road that is just over 1 km long but perfectly passable (I drove a Peugeot 206 along this road).
(S/E) Set off through the woods on a fairly wide and steep path.
Join the dirt road. Take it southwards; this is theGR®549A. When you reach a new car park, leave theGR® and turn left onto the path to the Refuge du Pré du Molard. You will soon come to a trailhead on the left.
(1) Follow this and higher up you will reach the path leading to the refuge.
(2) Take the path to the refuge and follow a few hairpin bends to reach it.
(3) Pass the Refuge du Pré Molard and you will reach another trail junction.
(4) Turn left onto the path leading to Habert des Sabottes. Ignore a hairpin bend on the left and continue to the next junction. Turn right and you will reach a new crossroads at the foot of Mont Saint-Mury.
(5) Turn left to go around the north side.
(6) Arrive at the summit of Mont Saint-Mury and turn left onto the path that joins the ridge at Col de la Sitre.
(7) Turn left and follow this ridge to the crossroads leading to Pointe de la Sitre. Turn left and reach the summit of Pointe de la Sitre.
(8) At 2,200 metres, enjoy breathtaking 360-degree views of both the Grésivaudan valley and the Grand Pic de Belledonne, the highest peak in the Belledonne range at 2,977 metres.
Reach the crossroads at the summit of Mont Saint-Mury.
(6) Take the path on the left to discover Lac de la Grande Sitre.
(9) Return via the same route. Reach the crossroads below Mont Saint-Mury.
(5) Turn left to quickly reach the crossroads on the Pré du Molard plateau.
(4) Return to the outward route and reach the crossroads you took on the way out.
(2) Stay on the road on the left and return to the junction of the circular.
(1) Follow the outward route to return to the car park where you started (S/E).