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Hike to the Lac Cornu from the Planpraz cable car

Hike to the Lac Cornu from the Planpraz cable car_Chamonix-Mont-Blanc
Hike to the Lac Cornu from the Planpraz cable car_Chamonix-Mont-Blanc
Hike to the Lac Cornu from the Planpraz cable car_Chamonix-Mont-Blanc

Description

The Lac Cornu is one of the most popular walking destinations. Fishing is possible in the lake. With its curious shape, it is nestled in a wild and quiet setting. Natural reserve of the Aiguille Rouges.

From the top of the Planpraz gondola, go up towards the plateau that you cross, pass by the "Altitude 2000" restaurant and the chairlift station and go towards the arrival towers of the chairlifts and ski lifts. Leave on the left the paths going to the Brévent and the Col du Brévent: use the track leading to the Flégère. At about 200m, take the upper left path crossing large grassy slopes. Pass on a promontory, cross a large scree and cross a small gap. Then go up a rather steep slope by a few switchbacks leading to the Col Cornu. Going a little further, we can see below the Lac Cornu. Reach it by descending a path often covered with snow.
Return by the same route.

More information available at the Tourist Office or the High Mountain Office and in our trail guide.
Warning: Trail conditions are subject to change, so please check before you leave.

Technical Information

Walking
Difficulty
Medium
Duration
3h30mn
Dist.
3.5 km
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Altimetric profile

Starting point

Départ de la télécabine de Planpraz , 74400   Chamonix-Mont-Blanc
Lat : 45.936024Lng : 6.853158

Date and time

  • From 22/06/2026 to 22/09/2026

Additional information

Updated by

Office de Tourisme de la Vallée de Chamonix-Mont-Blanc - 18/09/2025
www.chamonix.com
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Environments

Lakeside or by stretch of water
Lake view
Mountain location
Waterside

Open period

From 22/06 to 22/09 daily.
Access according to opening of Planpraz cable car.

Subject to favorable snow and weather conditions.

Contact

Phone :
04 50 53 00 24
04 50 53 22 08

Email : ohm-info@chamoniarde.com

Website : https://www.chamoniarde.com/

Type of land

Rock
Stone
Not suitable for strollers

Location complements

Departure from the summit of the Planpraz cablecar

Animals

No. Dogs are not allowed in the nature reserve

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Caution!
We have no information on the difficulty of this circuit. You may encounter some surprises along the way. Before you go, please feel free to inquire more and take all necessary precautions. Have a good trip! 🌳🥾