Ilhéou Lake via the Crête du Lys from the Grand Barbat chairlift

A lovely half-day hike through green summer pastures to Lac d'Ilhéou and its rocky landscape. Enjoy a 360° panorama of the surrounding peaks from the start of the hike.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 5.87 km
  • ◔
    Average duration: 2h 35 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 327 m
  • ↘
    Descent: - 319 m

  • ▲
    Highest point: 2,290 m
  • ▼
    Lowest point: 1,973 m

Photos

Description of the walk

The hike starts from the Grand Barbat chairlift arrival point, the only one open in summer.

Before setting off, take a quick detour to the orientation table (to the left of the chairlift arrival point) to learn the names of the surrounding peaks.

(S/E) The trail to Lac d'Ilhéou starts on the right, just above the Grand Barbat chairlift arrival point. A small yellow sign and a barrier to prevent two-wheeled vehicles from passing mark the start of the hike.

(1) The narrow trail descends gently to the left through the summer pastures. Below, the two small shepherd's huts quickly come into view. Ignore the trail that branches off to the right and leads to Col d'Ilhéou to descend to these huts.

(2) At Cabanes d'Arras, you will join theGR®10 trail, marked in red and white. Turn left and continue downhill towards Lac d'Ilhéou. If you are lucky, you will be accompanied by cows and sheep, which often graze around the trail. Ignore the path that branches off to the left. Gradually, the Gave d'Ilhéou river sinks into a mini-canyon, which you will be overlooking. Ignore another path that branches off to the left until you reach a crossroads.

(3) Continue on the right via theGR®10. Cross the Gave d'Ilhéou and continue straight ahead to the Refuge d'Ilhéou, on a path that has become stony.

(4) You have arrived! The return journey follows the same route to the Grand Barbat chairlift (S/E), which you will need to take downhill to return to the Lys cable car arrival station.

Waypoints

  1. S/E : km 0 - alt. 2,281 m - Arrival at the Grand Barbat cable car.
  2. 1 : km 0.09 - alt. 2,290 m - On the left as you descend.
  3. 2 : km 0.86 - alt. 2,192 m - Cabanes d'Arras. GR10.
  4. 3 : km 1.71 - alt. 2,051 m - Gave d'Ilhéou. GR10.
  5. 4 : km 2.95 - alt. 1,980 m - Refuge d'Ilhéou
  6. S/E : km 5.87 - alt. 2,281 m - Arrival at the Grand Barbat cable car.

Notes

Please note: The hike described above requires you to take the Lys cable car and then the Grand Barbat chairlift. You will therefore need to purchase a pedestrian pass for the day in Cauterets.

Water, refreshments and meals are available at the Refuge d'Ilhéou during the summer season.

Worth a visit

Near the start of the hike, there is an orientation table from which you can admire the surrounding peaks.
From the Refuge d'Ilhéou, you can follow a good path on the left side of the lake towards the bivouac area.

Always be cautious and plan ahead when you're outdoors. Visorando and the author of this route cannot be held responsible for any accidents occurring on this route.

The GR® and PR® markings are the intellectual property of the Fédération Française de Randonnée Pédestre.

Reviews and comments

4.7 / 5
Based on 14 reviews

Reliability of the description
4.7 / 5
Ease of following the route
4.9 / 5
Route interest
4.6 / 5
User 20969554

Overall rating : 4.7 / 5

Date of your route : Aug 20, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

The circuit is quite busy during the season, so it's best to start early (the cable cars start at 9:30 a.m. in summer). We chose to do the hike there and back (there is another easier route from the lake to get back to the chairlift, which most people take). The return trip is quite strenuous (you can feel it on the way down...) The climb back up is quite steep through pastures dotted with sheep and cows and accompanied by the cries of marmots. The return trip on the chairlift is magnificent: marmots, red kites and chamois if you're lucky. There's a beautiful view from the top of the chairlift. For the brave, it's possible to walk down instead of taking the chairlift and stop for a gourmet break at the Basque farm.

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Xavier CORNET
Xavier CORNET

Overall rating : 4.7 / 5

Date of your route : Aug 11, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

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Vanessa83140
Vanessa83140

Overall rating : 4.7 / 5

Date of your route : Aug 12, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

The cable car and chairlift ride offers beautiful views of the Cirque du Lys and allowed us to pass above the sea of clouds.
A beautiful, easy round trip hike with a good descent at the start (and therefore a good climb back up afterwards)
Be aware of the lift timetables for the descent, especially if you set off in the afternoon.
Do not leave Cauterets after 1.30 pm

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Olivia Deles
Olivia Deles

Overall rating : 5 / 5

Date of your route : Aug 19, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful walk. Once you reach the top of the chairlift, there is a lovely, easy descent to Lake Iléhou. Very pretty views. A very warm welcome at the lodge and plenty to eat. We chose to walk back down from the lake to Cauterets to avoid a simple return trip. It's a good descent and quite long, but very pretty, with a beautiful waterfall along the way. The last part is a little longer to Cauterets and less interesting. But the route as described in the hike is really worth it, and the cable car and chairlift make the hike easier!

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Mag81
Mag81

Overall rating : 4.7 / 5

Date of your route : Aug 13, 2024
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A beautiful hike on 9/08/24, so very recent, under a magnificent blue sky. Followed the marked trail, which was very easy from the orientation table. The descent to the lake was easy, but the climb back up was less so, with a nearly 400-metre elevation gain over a short distance and intense heat already at the end of the morning (climb back up around noon). And there were lots of people coming down with very light equipment (shoes)!!! But the lake was magnificent in the morning.

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michelebordier
michelebordier

Overall rating : 4.7 / 5

Date of your route : Aug 05, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Magnificent high mountain landscapes.

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supermounette
supermounette

Overall rating : 5 / 5

Date of your route : Jul 08, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

a beautiful hike under sunny skies, after a ride up in a cable car and then a chairlift. A vast panorama of the valley and surrounding mountains; quite crowded, however. you need to be careful on the last part as the path is very stony. But you'll be rewarded when you arrive at the lake, where you can eat at the refuge with the ever-friendly wardens. Unfortunately, on that day, a very strong wind prevented us from staying as long as we would have liked in this magnificent site.
personally, we preferred to descend via the GR10 to Cauterets... another adventure!

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Mariedu27
Mariedu27

Overall rating : 4.7 / 5

Date of your route : Aug 10, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

A beautiful walk, unlike the others: descent to the lake, then climb back up to reach the cable car (1 hour). Unfortunately, the lake was shrouded in mist that day, which prevented us from attempting to reach the small lake of Hourat as it was poorly signposted...

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Carl44
Carl44

Overall rating : 4 / 5

Date of your route : Aug 21, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

Please note that the hike can only be started from the chairlifts and cable cars in Cauterets.
You can also walk to the start, but it is a long walk with a steep climb to reach the starting point.

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mizel.
mizel.

Overall rating : 5 / 5

Date of your route : Aug 13, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Starting with the descent and then finishing the hike with the climb threw me off a bit (as I'm used to doing the opposite).
We deviated from the suggested route by extending it via the Col d'Ilhéou, where the view is breathtaking (about 20 minutes longer)
Herds of cows and horses dotted the route
There was a beautiful view of Lake Ilheou and Black Lake from above, and a lovely surprise on arrival, both in terms of the lake and the surrounding peaks.
Don't forget your swimsuit, even if the water is a little chilly...
Allow a good half day, setting off in the morning to picnic, swim and dry off.
A beautiful hike above the clouds

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Light4
Light4

Overall rating : 5 / 5

Date of your route : Aug 12, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Lovely walk

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saint-didier
saint-didier

Overall rating : 5 / 5

Date of your route : Aug 08, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

beautiful view of the peaks. Rocky landscape at this altitude. Herds of cows, sheep and horses dot the route.

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cyril b
cyril b

Overall rating : 5 / 5

Date of your route : Sep 05, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

i recommend this hike, the views are superb

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JACKY-MARYLENE
JACKY-MARYLENE

Overall rating : 4.3 / 5

Date of your route : Jul 17, 2021
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

very pleasant route, beautiful vegetation, wonderful to encounter herds of cows and horses.
a wonderful change of scenery in the peace and quiet of nature.

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