Lac Blanc

Route Description for Lac Blanc

La Flegere is closed for 2019.  This means that this has become a more challenging hike to get to Lac Blanc.  One option is to start from Col des Montets and hike up towards Lac de la Remuaz.  Don't go to the lake, but continue on the path, as it comes towards Lac des Cheserys and then onto Le Refuge du Lac Blanc.  This is a great route, and follows part of the Tour de Mont Blanc route.  It's about 12.0 km return, but has roughly 1,000 m of elevation gain, so should take 4-6 hours.   You could also hike down from Lac Blanc to the valley bottom, either to Argentiere or Chamonix. This route is shown on yellow on the map.

The hike to Lac Blanc uses lifts. When buying your tickets at the Téléphérique de La Flégère cable car station, explain your planned itinerary (Lac Blanc from the Index lift, walking down to Flégère mid-station) as it’s best to check with the staff at the lift station to confirm that the path is accessible. They may suggest a different route according to conditions.

Take the lifts to get to the top of L’Index. From here, turn right (away from Mont Blanc) and follow the signed hiking trail to Lac Blanc. This high rocky path undulates along a clearly marked but stony route. You need good ankle support in your shoes for this one! Keep an eye on your feet, though it’s hard not to be distracted by the panorama of the Mont Blanc Massif unfolding on your right. To your left, the Aiguilles Rouges rise above you - look out for the bright shapes of people scaling the popular climbing routes.

This part of the Lac Blanc hike has a high alpine, adventurous feel as it winds in and out of the rocks. There is a lot of wildlife on this hike. Listen out for the high whistle of marmots and see if you can spot them - ibex also frequent this area, and eagles. The path is clearly signed with red paint marks along the way.

After about an hour and a half, you’ll arrive at the junction with the Lac Blanc path that ascends from Flégère (and the path you will descend on later). The crowds often increase dramatically here.

Continue following signs to Lac Blanc. The path climbs up in zig-zags towards the lake - you can be walking through snow here well into July in some years.

You emerge at a picture-perfect scene, with the cheery parasols from the terrace of the Refuge du Lac Blanc fluttering over the lakes. Hike around the water to revel in the astonishing setting and see the reflections of the mountains shifting as you move. The refuge is a nice place to eat, serving simple lunches, or pick your ideal picnic spot and enjoy. Dipping your toes in the freezing water is fun but swimming is discouraged due to the delicate ecology of the lake - also it really is incredibly cold!

Return via the marked path towards the Flégère mid-station. Start by back-tracking but then don’t take the Index turn-off after the zig-zags - carry on downwards, following signs to Flégère.

The descent from Lac Blanc is an easy and pretty hike from the rocky high alpine, through fragrant low shrubs like juniper, blueberry and alpine rhododendron. Eventually you pass a few small trees. The path, again, is very well marked and the views on the way down are equally lovely, facing Mont Blanc. In early summer there can be many beautiful flowers on this route.

Lac Blanc in 2024

In 2024, there were no infrastructure changes for Lac Blanc. The trail conditions for the Lac Blanc in Chamonix for 2024 are expected to be most favorable from June to October.