From the Col de Cluy to the Croix de Cassini and back via the Grandes Buffes

This walk takes you to the Croix de Cassini (2,361 m), offering a magnificent 360° view of La Meije, the Aiguilles d’Arves, the Grandes Rousses, Belledonne, Le Taillefer and the Muzelle Glacier. In good weather, you may be able to see Mont Blanc, and blueberries can be picked in season.

Details

40608930
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  • Walking
    Activity: Walking
  • ↔
    Distance: 5.47 mi
  • ◔
    Average duration: 4h 25 
  • ▲
    Difficulty: Difficult

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 2,205 ft
  • ↘
    Descent: - 2,211 ft

  • ▲
    Highest point: 7,769 ft
  • ▼
    Lowest point: 5,892 ft

Description of the walk

Park in the small dirt car park near the Col de Cluy.

(S/E) Head towards the ruined house and, immediately afterwards, take the wide grassy path above the sheep track. Follow this path for 1 km to the Compalou chalet.

(1) Leave it on your left and begin the ascent, which is quite steep at first, straight ahead. The path is clearly marked, with no risk of going astray; at the start, there are markers (wooden posts) to prevent any confusion. Partway up, a cairn indicates the direction to follow. You’ll reach the sign for “Sous les Grandes Buffes”.

(2) Continue straight on, heading towards the Col de Grange Pellorce, and walk on largely level ground. For those wishing to stop at the Grandes Buffes on the way there, there is no marked path. You must climb almost straight up, then veer off to the right.

(3) Leave the path leading to Les Grandes Buffes on your left and carry on to reach the Col de Grange Pellorce (incorrectly marked on the IGN map).

(4) At the pass, a sign points straight ahead towards the Croix de Cassini. The climb begins shortly afterwards; it is quite steep at first, then levels off, reaching the summit after about an hour.

(5) Superb views; in good weather, you can see Mont Blanc. Return to the Col de Grange Pellorce.

(4) Continue along the same path you took on the way up.

(3) Leave the path by keeping to the right and head up towards Les Grandes Buffes, initially aiming for the clearly visible avalanche-trigger hut. Several tracks actually lead to the summit.

(6) At Les Grandes Buffes, the path is not marked, but it is difficult to go wrong. Initially, cross the valleys, heading south-south-east to south. The slope then becomes steeper; descend almost directly down it to rejoin the path taken on the way there, not far from the sign for “Sous les Grandes Buffes”.

(2) Carry on to the right and you’ll come back to the Compalou chalet.

(1) Follow the grassy track/road for about one kilometre to the stone house at the Col de Cluy, then return to the car park where you started (S/E).

Waypoints

  1. S/E : mi 0 - alt. 5,899 ft - Car park - Col de Cluy (1802m)
  2. 1 : mi 0.62 - alt. 5,994 ft - Chalet de Compalou
  3. 2 : mi 1.34 - alt. 6,906 ft - Signpost: “Sous les Grandes Buffes”
  4. 3 : mi 1.64 - alt. 6,844 ft - Les Grandes Buffes junction
  5. 4 : mi 1.9 - alt. 6,837 ft - Col de Grange Pelorce (2086m)
  6. 5 : mi 2.63 - alt. 7,769 ft - Croix de Cassini
  7. 6 : mi 3.86 - alt. 7,100 ft - Grandes Buffes
  8. S/E : mi 5.47 - alt. 5,899 ft - Col de Cluy car park

Notes

This walk can be started from the Col de Cluy, or it can serve as an extension of the walks already described that pass through the Col de Cluy.

It is also possible to reach the Col de Cluy on foot from the resort. There is parking available at the start of the sheep track at the Chapelle Saint-Géraud (5 to 8 spaces); in this case, you will need to walk up to the Col de Cluy via the sheep track.

Worth a visit

Take your time and look around – the scenery is magnificent and truly breathtaking.

Reviews and comments

5 / 5
Based on 2 reviews

Reliability of the description
5 / 5
Ease of following the route
5 / 5
Route interest
5 / 5
Cudtomx
Cudtomx

Overall rating : 5 / 5

Date of your route : Jun 03, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

I recommend this walk in the spring: a huge variety of flowers.

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les 2 chams
les 2 chams

Overall rating : 5 / 5

Date of your route : Oct 23, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

from the village all the way to the Col de Cluy… not a soul after that
all the way along the walk – a beautiful view of the Oisans massif, then of the Aiguilles d’Arve

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