Lac du Lou and Lac de Pierre Blanche

This hike explores a wild area starting from the lively resort of Les Ménuires.
There are lakes to discover, of course, but also a multitude of streams and rhododendron beds. Marmots and chamois watch over your progress.

Details

638175
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  • Walking
    Activity: Walking
  • ↔
    Distance: 11.82 km
  • ◔
    Average duration: 5h 10 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 639 m
  • ↘
    Descent: - 640 m

  • ▲
    Highest point: 2,401 m
  • ▼
    Lowest point: 1,759 m

Photos

Description of the walk

Start from the Bruyères car park at the Ménuires ski resort.

(S/E) From the car park, descend slightly towards the Doron.

(1) Cross the Bruyères bridge. Take the path on the right that starts at the foot of a statue. Climb towards Lac du Lou along this path, which leads away from Les Ménuires resort, and you will reach the lake and the old refuge, as well as the new one under construction.

(2) Go around the buildings and stay on the path overlooking the lake. After passing the lake, the slope becomes steeper and the path crosses streams, some with footbridges and some without.

(3) In a relatively flat area, cross the Torrent du Lou (not marked on the map). Continue along the path, which becomes steeper as it follows a faster-flowing stream. You will then come out onto a small plateau and see the Lac de Pierre Blanche.

(4) Continue along the path, which climbs further, until you reach a junction marked by a sign.

(5) Turn right towards the Col de Pierre Blanche and climb to an altitude of 2,400 metres.

(6) Descend via the same route you took on the way up until you reach the Lou torrent.

(3) Take a path on the right that is barely marked at the start, but aim for a footbridge that can be seen near the lake.

(7) Cross the footbridge and climb a few metres to go around a rocky outcrop, then descend to the lake and follow the path along the water's edge. Complete the tour of the lake by crossing another footbridge and joining a wide track just before the Refuge du Lac du Lou.

(8) Descend to the right along the path to a red ski run.

(9) Leave the path and descend to the left along the ski slope, heading for a footbridge over the Torrent du Lou.

(10) After the footbridge, turn right along the Doron de Belleville to return to the footbridge near the car park.

(1) Retrace your steps and follow the same route back to your vehicle (S/E).

Waypoints

  1. S/E : km 0 - alt. 1,766 m - Les Bruyères car park
  2. 1 : km 0.15 - alt. 1,759 m - Pont des Bruyères - Doron de Belleville (rivière)
  3. 2 : km 2.72 - alt. 2,052 m - Refuge du Lou
  4. 3 : km 3.36 - alt. 2,077 m - Torrent du Lou
  5. 4 : km 4.65 - alt. 2,304 m - Lac de Pierre Blanche
  6. 5 : km 5.15 - alt. 2,374 m - Intersection
  7. 6 : km 5.44 - alt. 2,398 m - Altitude 2,400 m
  8. 7 : km 7.65 - alt. 2,040 m - Footbridge
  9. 8 : km 8.66 - alt. 2,041 m - Track
  10. 9 : km 9.92 - alt. 1,923 m - Red track
  11. 10 : km 10.6 - alt. 1,765 m - Footbridge
  12. S/E : km 11.82 - alt. 1,766 m - Park

Notes

Access to the car park from the valley: at the first roundabout at the entrance to the resort, turn right. At the second roundabout, continue towards Val Thorens. On the climb that follows, take a road on the right that descends to the car park on the edge of the Doron.

Variants

At (8), you can rejoin the ascent route with (2) and thus avoid the somewhat monotonous return via the track between (8) and (9).
At (9), you can continue along the track, then after passing a stream, turn left and return to the start via a pleasant path.

Worth a visit

Near the start, there is a short, easy walk around the Plan des Bruyères.

Reviews and comments

4.7 / 5
Based on 23 reviews

Reliability of the description
4.7 / 5
Ease of following the route
4.6 / 5
Route interest
4.7 / 5
User 12012840

Overall rating : 5 / 5

Date of your route : Aug 09, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

We appreciated the reliability of the description and the map.
Perfect!

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ZakSon
ZakSon

Overall rating : 4 / 5

Date of your route : Aug 05, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★☆☆ Average
Very busy route : Yes

Good description and easy route to follow (impossible to get lost in summer, given how busy it is). Beautiful view of Les Menuires/Val Thorens, lovely steep-sided valley, but not much else.

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roupillon
roupillon

Overall rating : 4 / 5

Date of your route : Aug 30, 2024
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : Yes

beautiful hike

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M.Pompon
M.Pompon

Overall rating : 4.7 / 5

Date of your route : Aug 01, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

nice hike, but there may be a sign missing at the end of Lake Lou because there are paths going in all directions. The same applies to the return trip, although this is not a big deal because you can always navigate by sight.

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MGR Moustache
MGR Moustache

Overall rating : 4 / 5

Date of your route : Jul 22, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : Yes

We had an unpleasant surprise when we arrived at the start of the hike: the trail, which is normally exclusively for pedestrians, was closed to pedestrians because it was reserved for a mountain bike competition. So, 0/10 for the local authorities: if you want to organise this kind of competition, you start by creating trails designed for this purpose, as Meribel has done, for example. After a moment's hesitation, we climbed up to Lake Lou, more or less following the route planned for the descent. The place is pleasant but quite busy, especially as it is possible to get there from a closer car park. In the end, we didn't go any further, preferring to come back another time, on a day without bikes and not at the weekend. Under these conditions, the ratings I give are therefore very relative.

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nicolasgellet
nicolasgellet

Overall rating : 4.7 / 5

Date of your route : Aug 23, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

A very beautiful hike, we came looking for cooler weather and were delighted with temperatures between 23 and 27 degrees, ideal weather. There were a few sections towards the end that were a bit random as the route was not very clear
Make sure you have some cash in your pocket because the refreshment stop at the lake is very welcome

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Francis.Ahr
Francis.Ahr

Overall rating : 4.7 / 5

Date of your route : Aug 24, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Nice outing. The signs along the route are interesting to read. I felt a little down when I saw the photo of Glacier du Péclet in 1966 and 2016. Both lakes are magnificent. Excellent welcome at the Lac du Lou refuge.

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mll_
mll_

Overall rating : 5 / 5

Date of your route : Aug 18, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful hike with lakes and marmots everywhere (at least you can hear them).
Very beautiful views from the top overlooking two lakes. No view of Mont Blanc, which was a shame. I imagine we would have had to push on to the Col de Pierre Blanche to see it.
We were lucky enough to come across a huge herd (1,800 animals, we were told at the Lou refuge) of sheep and goats, accompanied by at least three patous (sheepdogs).
To vary the pleasures during the descent from (5) to (3), we chose to descend the combe further east, passing near the 2168 ridge, then joining the ski touring route (long blue dots on the IGN map), not far from the ruined Revers hut. There is no marked path, but the mountain is easily accessible, with easily avoidable rock outcrops and often livestock trails. Expect to ford one or two streams.

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benom74
benom74

Overall rating : 5 / 5

Date of your route : Aug 18, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Great hike with lots of water sources and breathtaking views. It's true that Lac du Lou is very busy, but once you get past that, it's better and you find some peace and quiet. The more adventurous can do a loop via Roche Jaille and Lac de Monfiot. Allow around 6 hours for the whole loop, but it's well worth it and not too difficult apart from the length

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Marc heur
Marc heur

Overall rating : 5 / 5

Date of your route : Aug 09, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

I prefer White Stone Lake, which is much less crowded than Lou Lake, where the crowds can be a bit off-putting. Despite this, both lakes are very beautiful.

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partouche
partouche

Overall rating : 5 / 5

Date of your route : Aug 09, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

The white stone lakes are more accessible to adults and hikers. Some sections of the streams are more difficult for children (especially in trainers). Dogs are allowed off the leash and dig holes in the ground where marmots live, while their owners laugh alongside them. Not funny at all. Otherwise, it's a beautiful hike, very accessible and well marked.

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Mistralette39
Mistralette39

Overall rating : 4.3 / 5

Date of your route : Aug 10, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

Superb hike. Relatively easy until you reach Lac du Lou. Just before arriving at Lac de Pierre Blanche, it gets a little steep. But be careful, from Lac de Pierre Blanche to Col de Pierre Blanche, there is a 300 m elevation gain, not 100 m as stated in the description. Col de Pierre Blanche is at 2,636 m, not 2,400 m (as indicated in the description). This makes quite a difference. From the lowest point at 1,761 metres to the highest point at 2,636 metres (the pass), there is a 875-metre elevation gain. It's better to be warned... But once you reach the pass, you are rewarded with a breathtaking 360° view and magnificent flora between the lake and the pass.

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jlf13
jlf13

Overall rating : 5 / 5

Date of your route : Jul 19, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A beautiful extended loop hike via Roche Jaille, following the ridge towards the Col de Monfiot, then descending via the Petit and Grand Monfiot lakes to reach the Lac du Lou refuge.
From the Col de Pierre Blanche, there is a beautiful 360° view of the peaks of the Maurienne and Tarentaise valleys.

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jpr0205
jpr0205

Overall rating : 5 / 5

Date of your route : Jul 12, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Very busy at the start, after the Lou refuge, much less so afterwards. Interesting.

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BBLOVE
BBLOVE

Overall rating : 5 / 5

Date of your route : May 21, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A magnificent hike, but we couldn't make it to the white stone lake because there was too much snow on the trail and the streams were raging.
Disappointed that it wasn't specified that this hike should be done after the snow has melted, i.e. from the end of June onwards, in order to reach the two lakes...
However, the snow-covered landscape is breathtaking. We even spotted a marmot.
I recommend it and we will return this summer to visit the white stone lake

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