Pic St Michel is a popular day hike from just above Lans-en-Vercors.
From Grenoble get to the Vercors plateau via Seyssins using the D106. Just as you enter Lans-en-Vercors, turn left onto Route du stade du neiges towards Barnets. After around 4 km there’s a small car-park on the left hand side of the road.
After around 1km of walk, you’ll find the popular Auberge Allieres, from where you can start the climb up to the Col de l’Arc or to the Pic St Michel. I took the path to the Col (anticlockwise) then to the summit. There was some loose gravel on the way down, so next time I might choose to take the route clockwise, returning via the Col.
Ascent was around 700m, and total walking time around 3.5 hours, 9km.