The hike starts near the Chalet-hôtel du Buet and the Buet railway station, on the road from Chamonix to the Col de la Forclaz.
In the first part of the hike, follow the signs for the Refuge de la Pierre à Bérard.
(S/E) Head west towards the chalets of La Poya.
(1) Continue slightly to the right towards the Bérard waterfall. Continue west, keeping above the torrent. Leave the Tré les Eaux trail on your right and join the Eau de Bérard torrent.
(2) Take the footbridge and cross the stream. From here, the trail remains on the left bank of the Eau de Bérard. Cross a wooded area and follow a few switchbacks. At the edge of the forest, the slope becomes gentler. Continue south-west.
(3) At a fork, take the right-hand path. N.B. The two paths rejoin later, but the right-hand path is the main one. The trail continues south-west. When the slope becomes steeper, the trail winds its way up to the Refuge de la Pierre à Bérard, which is built against a huge rock.
(4) From the refuge, take a path on the right (north-west) which climbs steeply and efficiently. After several hairpin bends, you will come out into an area of large boulders, where the path is poorly marked or not marked at all. Follow the cairns, an old red marker (probably faded) and recent vertical yellow markers.
(5) Directly below the Col de Salenton, leave the trail that leads to the pass on your left and turn right. Head north, following the foot of the Aiguille de Salenton. Turn left and you will come to a flat area where there is often snow in summer. Continue northwest to the foot of a steep slope rising to the north.
(6) Turn right and climb up the scree. The slope is very steep and the path winds up in a series of short switchbacks. You will come out onto the Arête de la Mortine at the radio antennas.
(7) Follow the ridge, where the gradient is more moderate. Pass the Pictet shelter (a very basic stone structure) and continue north-east to the summit.
(8) Descend by retracing your steps along the same path until you reach the Gare du Buet (S/E).