The Lac de Lessy, around which marmots and ibex make their home, is a stunning site at an altitude of 1733 m in the village of Le Petit-Bornand Glières-Val-de-Borne. It is one of the most beautiful walks in the Bornes-Aravis area.
Departure: Pteret car park, Montagne de Paradis
Period: from May to October
Views: Panoramic views from Pteret over the Arve valley and the Geneva basin.
View of the Col de la Forclaz and the Col de la Buffaz
Access: From the Mairie of Le Petit-Bornand, take the Puze road towards Paradis, then follow signs to Paradis.
Park your car at the Pteret car park (ledge next to the chalets).
At the car park, take the path in the direction of "Lac de Lessy" and follow the track through the forest. Just in front of the Chalet du Lainvouet (last chalet), turn left in the direction of Lac de Lessy, then walk over the area of rocks. The path continues until it reaches a little valley of fallen rocks. The path crosses this and takes you to a section that is a little more difficult, from where you can use the ladder to reach the crest that overlooks the Mayse valley.
Continue straight on along the mountainside towards the Col de la Forclaz from where you can spot the Lac de Lessy.
Walk down to the chalets and the Lessy refuge.
You can walk round the Lac de Lessy.
Your return is by the same path.
Herding dogs are present in the vicinity of the lake from the beginning of July to the end of September, they must be approached with great caution and certain instructions must be respected (see video link for explanation). Dogs must be kept on a lead.
You can download the route map for this hike!
Dispositions spéciales COVID 19
The tourist office has several other hikes available for all levels!
Services & equipment
- Car park
- Pets welcome
- Pedestrian sports
- Hiking itinerary
Minimum age : 9 years
Daily lengthDaily length : 04h30
Difference in altitudeVertical gain : 494 m
Itinerary typeItinerary type : Round trip
AnimalsAnimals : Accepted
Whichever hike you choose to do, remember to take a rucksack packed with cereal bars, plenty of water, sunglasses, sun cream, a basic first aid kit, as well as suitable clothing according to the season and the weather forecast.