The starting point for hikes in La Bérarde is near the Chalet Alpin. The route is clearly marked at each intersection.
(S/E) Follow the signs for Refuge du Châtelleret. After about 100 metres, take the path on the right. Climb the winding path before heading north. At a crossroads, turn right and continue climbing.
(1) Cross the small bridge over the Bonne Pierre torrent, a tributary of the Étançon. A little further on, leave the Bonne Pierre valley trail on your right and continue climbing. Look out for the view of the Écrins ridge and dome on your right.
(2) At the intersection, ignore the path on the right and continue north towards the Refuge du Châtelleret.
(3) At the fork, turn right, stay on the left bank of the torrent and join the next one.
(4) Turn left (the route on the right is longer). The refuge is clearly visible and appears close, with La Meije above it.
(5) Ignore the first path on the left leading to a footbridge, then turn left towards a second footbridge and cross the stream.
(6) At the fork, go right and climb up the right bank to reach the refuge.
(7) The return is via the same route to La Bérarde (S/E).