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The Lake of Lessy and the Aiguille verte

The Lake of Lessy and the Aiguille verte
The Lake of Lessy and the Aiguille verte
The Lake of Lessy and the Aiguille verte
The Lake of Lessy and the Aiguille verte
The Lake of Lessy and the Aiguille verte
The Lake of Lessy and the Aiguille verte
The Lake of Lessy and the Aiguille verte
The Lake of Lessy and the Aiguille verte

Description

Starting from Le Grand-Bornand Chinaillon, a 2.5 hour loop during which 11 interpretive signs explain the different facets of the mountain environment: flora, fauna, habitat, geology, ...

Starting altitude: 1,300 m. Highest point: 1,931 m
Return via the same route. Beware of storms on the ridge.
Alternative route possible to complete a loop with a return via the chalets of Mayse, Le Planay and the old village (elevation gain 1,100 m and 6½ hours).

Lake Lessy is part of the Natura 2000 programme, which aims to protect remarkable environments.
In terms of plant life, the lake is home to a very large population of alpine pondweed and a smaller population of thorny buttercup. In terms of amphibians, the lake has a colony of Alpine newts.
In this context, swimming is strictly prohibited.
The following are also strictly prohibited:
- Camping. It is only permitted under the stars (i.e. without tents, tarps or other types of shelter) near the communal refuge at Lake Lessy, with the permission of the caretaker.
- Campfires and outdoor fires, the use of stoves and barbecues.
- Drones.
- Slacklines.

Fishing is permitted: 1 catch per day per fisherman, single barbless hook, natural bait or fly only. River permits are available for purchase at the Grand-Bornand Tourist Office.

Technical Information

Walking
Difficulty
Medium
Duration
5h
Dist.
13 km
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Altimetric profile

Starting point

Office de tourisme du Chinaillon Le Grand-Bornand Chinaillon , 74450   Le Grand-Bornand
Lat : 45.973896Lng : 6.454972

Points of interest

Date and time

  • From 01/05/2026 to 30/11/2026

Additional information

Environments

Lakeside or by stretch of water
Near shuttle stop
Lake view
Mountain view
Mountain location
Close to a public transportation
Village 2 km away
Waterside

Updated by

Le Grand-Bornand Tourisme - 26/07/2025
www.legrandbornand.com
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Open period

From 01/05 to 30/11 daily.
From spring to autumn, depending on snow and weather conditions. Inquire about conditions before heading out. You are responsible for your own safety.

Subject to favorable weather.

Location complements

The trail starts in front of the Tourism Office in Le Grand Bornand Chinaillon.

Animals

Yes

Data author

62 place de l'églsie 74450 Le Grand-Bornand France

Ratings and reviews

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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! 🌳🥾