To reach the starting point of the hike, coming from Bourg-Saint-Maurice, follow the signs for Val d'Isère. After the Saut tunnel, turn left towards Villaret du Nial and follow the road to the first car park in Saut on the right, just below the dam. This car park is the starting point of the hike.
(S/E) Take the path directly opposite the car park exit (there is a roundabout!). There are no signs. Look for three stones on the ground.
Follow the well-marked trail. There are sometimes several trails, but there is always one that is wider than the others. Continue in a general north-northwest direction, passing Plan de la Casette until you reach a change in direction.
(1) Turn 90° east (right), continue climbing until you reach the foot of a rocky outcrop.
(2) Follow the trail opposite.
Caution here: Avoid the tracks that branch off to the right as they lead to a vertiginous ridge path with some tricky sections. Reach the edge of the Grande Sassière glacier. It is now between 20 and 50 m below the path.
(3) Begin the final climb to the Aiguille de la Grande Sassière.
Find the best tracks to reach the summit. The slope is steep with sections exceeding 40%. Reach the summit.
Enjoy the superb view of the French and Italian Alps, including Mont Blanc and the Grand Paradis.
(4) Begin the descent via the same route.
Note: the path will be a little muddy as the sun warms the ground, which is often frozen at this altitude.
Return to the car park at Saut (S/E).
