Le Treu

The summit of Le Treu is beautifully situated and offers magnificent panoramic views of the Aravis mountains, the Arly valley, the surrounding massifs and, of course, Mont Blanc. This is a wild hike, mainly on trails.

Details

3934816
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 7.97 km
  • ◔
    Average duration: 3h 50 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 537 m
  • ↘
    Descent: - 537 m

  • ▲
    Highest point: 1,834 m
  • ▼
    Lowest point: 1,317 m

Photos

Description of the walk

From Flumet, take the D1212 towards Ugine, then the D113 to Saint-Nicolas-la-Chapelle. Continue on the road that climbs to Le Plan, then to the hamlet of Chaucisse. Car park at the entrance to the village.

(S/E) Follow the road uphill, pass two hairpin bends and, at the house on the left, continue along the mountain track to the next right-hand bend.

(1) Leave the track and continue along the path opposite. Ignore a turn-off on the right, enter the woods and descend to the Ruisseau du Grand Nant stream. Ford the stream and immediately take the path that climbs to the right through the undergrowth. Then cross a small alpine pasture (close the gates behind you) and pass through a small patch of woods. You will see an alpine hut about a hundred metres above you.

(2) Just after leaving the woods, turn right onto a barely visible track, which you can make out thanks to the flat area it forms, and leave the path that continues to a "muddy patch" about 50 metres further on. Continue along this track until you reach the clearly visible cross-path above that leads to the hut.

(3) Follow this path to the left, which runs along the base of Le Treu, until you reach a fork.

(4) Continue straight ahead. The path joins a track which you should follow to the Chalet des Avenières (orientation table).

(5) Take the path that climbs to the right, cross a wood and a meadow to reach the foot of Le Treu. Begin a steady climb which, via numerous small hairpin bends, leads to the summit of Le Treu.

(6) After enjoying the view, continue downhill on the other side until you reach a cross-path.

(7) Take a small path on the right along the mountainside and rejoin the route you took at the foot of Le Treu.

(4) Continue downhill along the same path and reach the hamlet of Chaussisse (S/E).

Waypoints

  1. S/E : km 0 - alt. 1,317 m - Hamlet of Chaussisse
  2. 1 : km 0.53 - alt. 1,371 m - Turn right, path opposite
  3. 2 : km 1.37 - alt. 1,470 m - Fork in the path, on the right, trail not very visible.
  4. 3 : km 1.58 - alt. 1,506 m - Fork to the left
  5. 4 : km 1.98 - alt. 1,543 m - Common fork A/R
  6. 5 : km 2.59 - alt. 1,551 m - Chalet des Avenières
  7. 6 : km 4.39 - alt. 1,834 m - Summit of Le Treu
  8. 7 : km 4.93 - alt. 1,718 m - Fork in the road, to the right
  9. S/E : km 7.97 - alt. 1,317 m - Hamlet of Chaussisse

Notes

The route is not very well marked but fairly easy to follow with numerous signposts. However, be careful on the section that crosses the mountain pasture towards (2), as the trail can be confused with those made by grazing cows.

Avoid this hike in wet weather, as the ford at the Grant Nant stream may become impossible to cross.

Alternative route:
(5) You can start the hike from the Chalet des Avenières car park.
Length: approximately 4 km with an elevation gain of 300 m.

Worth a visit

The church and town hall in the hamlet of Chaucisse.

Reviews and comments

4.4 / 5
Based on 9 reviews

Reliability of the description
4.6 / 5
Ease of following the route
4.4 / 5
Route interest
4.3 / 5
phil73
phil73

Overall rating : 4.7 / 5

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

beautiful hike, avoid in wet weather. Beautiful views throughout the route
at the chalet, you can enjoy a delicious blueberry tart.

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User 866039

Overall rating : 5 / 5

Date of your route : Jun 21, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

The GPS track is easy to follow. It took us two hours with a few short breaks, instead of the three hours and 40 minutes indicated. Nice, very clean refuge at No. 5. The view is magnificent all along the walk. The section between 6 and 7 is difficult because of the steep climb. But the hike is well balanced and the view is fantastic.

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Jpa73
Jpa73

Overall rating : 4.3 / 5

Date of your route : Nov 11, 2024
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful hike with magnificent 360° views.
However, the climb on the second part from Les Avenieres is very steep and exposed, which can be daunting.
The descent is over rough terrain.
In any case, this hike should be avoided in wet weather.

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Zoltic
Zoltic

Overall rating : 4.3 / 5

Date of your route : Oct 27, 2024
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful route, offering excellent value for effort in terms of scenery. Even if the climb above Les Avenières is tough.

Orientation table with beautiful views from "Les Avenières".

The route can be summarised as follows: follow "Les Avenières", then follow "Le Treu" and then follow "Chaucisse". In short, the route is well marked and generally easy to follow. Here and there, the path is discreet, and even largely covered with dead leaves at the end of October.

We came across a hunter tracking chamois, so even if we didn't see any, we can assume that there are some.

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bonjourlesvoyages
bonjourlesvoyages
• Edited:

Overall rating : 4.3 / 5

Date of your route : Jun 06, 2024
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A beautiful, original hike far from the beaten track. Very varied: woods, mountainsides, ridges...
Before reaching point 3, take a grassy path on the RIGHT towards an alpine chalet and NOT straight ahead towards a "muddy patch", then zigzag upwards towards the base of the mountain.
Above (at the same height as the chalet), turn left towards the stream. Cross, closing
the fence and continue towards "Les Avenières". Between 5 and 6, there is a steep climb with hairpin bends, then it is much more
relaxed. Hike on 6 June 2024.

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JOSETTE25
JOSETTE25
• Edited:

Overall rating : 4.3 / 5

Date of your route : Jul 17, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★☆☆ Average
Very busy route : No

Steep climb and long descent. View of Mont Blanc, but no marmots in sight. Apparently, this is not a place for marmots.

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LAFORGE B
LAFORGE B
• Edited:

Overall rating : 4.3 / 5

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

Overall, a beautiful hike with stunning views along the route (Aravis and Beaufortain). It's a shame there were no marmots to be seen. However, there is a very steep climb on the Treu (significant elevation gain over a short distance), which suggests that this hike should be classified as difficult rather than moderate.

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Denis26
Denis26 ★

Hello Regill74
Can you specify where you encountered difficulty?
Was it after crossing the stream at the edge of the woods to climb a little higher and find a more clearly marked path?

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Regill74
Regill74
• Edited:

Overall rating : 4 / 5

Date of your route : Jul 19, 2021
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful hike, despite a difficult section to find after leaving the woods at the start of the hike (except with the Visorando app), but a little further on, you are rewarded with numerous marmots. A difficult climb, but a very beautiful view at the end.

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paco830cara
paco830cara

Overall rating : 4.7 / 5

Date of your route : Jan 25, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

This route is well presented and worth recommending to people who are not from the area.

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