Coming from Grenoble, drive through Bourg d’Oisans and head towards Saint Christophe en Oisans via the Route de la Bérarde.
Pass through the hamlet of Saint Christophe, then take the first road on the left towards Layrette and Les Prés; follow the road uphill to the car park at 1,635 m and park here.
(S/E) Start north of the car park, follow the path to the stream, which you cross via a footbridge, then continue to a junction of paths.
(1) Take the path on the right which climbs up the valley, on the right bank of the Torrent du Diable, to the Refuge de la Selle at 2,673 m.
(2) Continue north-east past the refuge to reach the glacier at around 2,860m.
(3) From here, you enter high-mountain terrain: continuing is reserved for very experienced hikers accustomed to this type of glacier traverse,
Set foot on the Selle Glacier, heading for the Col du Replat at the top of a steeper snow slope (glacier) to the east-southeast. Reach the foot of the pass at around 3,140 metres.
(4) It is essential to put on crampons here (if you haven’t already done so) for the final ascent, which is significantly steeper. You will then reach the Col du Replat (3,335 m).
(5) Follow the same route back to return to the car park (S/E).