Park in Méaudre at the large car park at Les Mateaux.
(S/E) Take the Murailles de la Combe du Furon forest road (D106k).
(1) Leave the forest road at the entrance to the hairpin bend (elevation 1225) and follow a path in the same direction. Reach the Vachat forest road at a bend (elevation 1379).
(2) Cross the forest road and continue along the path opposite. You will reach Gour Martel on the right.
(3) Continue straight ahead to the ridge.
(4) Turn left. Cross a forest road (elevation 1501) and continue straight ahead on a steep path that winds its way to the summit of Gros Martel (elevation 1556).
(5) View of the eastern Vercors. Continue down the ridge.
(6) At the crossroads, take the main path on the right, which winds down several hairpin bends.
(7) Leave this path and take another grassy path on the right (no sign) to reach the start of the cross-country ski trails at the Narces refuge.
(8) Head south down the road (D106m) to the hairpin bend on the right.
(9) Turn left onto the Cray forest road, a wide, gently sloping path.
(10) At the end of this path, take the ski slopes on the right to return to the resort and the car park (S/E).