Lac Blanc is the hike that appears on every Chamonix postcard. A mountain lake high on the north side of the valley reflects the whole Aiguilles Rouges and Mont Blanc skyline on a calm morning, and a refuge nearby gives walkers a place to stop. The standard approach starts at Les Praz, where you take the Flégère gondola, and from the top station it is a walk of about two hours to the lake on a well-marked mountain path. The tourist office recommends this route for families and beginners, and it contrasts with the harder paths from the Col des Montets and Tré-le-Champ, which are technical and in places exposed and are meant for experienced walkers only. The hike is free apart from the lift fare, and the reward is out of proportion to the effort. The path crosses rocky terrain and some steep sections, so good boots are essential.
The season is clear
This is a summer and early autumn walk. The tourist office states that high-altitude hikes such as Lac Blanc are only accessible in summer and autumn, depending on snow, and that snow often makes certain altitudes unsafe until the end of June. At the moment the Flégère gondola is closed between seasons, with the winter opening scheduled for 28 November 2026, and the path above is likely to be under snow.
Do not try to hike it now. In winter the area is for skiers and, with proper guidance, snowshoers and mountaineers, and the hike returns when the snow melts and the lifts reopen in early summer.
When the season is right, start early. Morning light is better for reflections, the lake is calmer before the wind picks up and the path is quieter. Take plenty of water, a windproof jacket, sun protection and snacks, and carry a map or a downloaded route. Check the weather and the mountain conditions before you set off, and if you are unsure about snow or the state of the path, call the mountain rescue information line or ask at the tourist office.
Dogs can ride the Flégère lift in summer, though they need to be kept under control near other walkers and livestock.
The refuge near the lake is a popular place for lunch or a night, but check its opening dates and book ahead if you want to stay. Many walkers continue to the neighbouring Chéserys lakes for a longer loop. Allow around five hours for a round trip including the lake, and add the time to reach and leave the gondola.
The return is a straightforward descent, and the Les Praz gondola's last departure time is the thing to watch so you do not get stuck at the top. A guided hike is worth considering if you are not confident reading mountain terrain.
What to expect
The experience
A marked mountain path of about two hours from the top of the Flégère gondola to Lac Blanc, with views over the Mont Blanc massif.
Best time
Summer and early autumn mornings, once the snow has melted from the path.
How long
Four to six hours for the round trip including the lift and time at the lake.
Tips
Wear proper hiking boots, carry water and a windproof layer, check snow and weather, and watch the last gondola time.
Quick picks
- Best for
- Fit walkers who want the classic Chamonix lake with the best mountain reflection.
- Families
- The Flégère route is the easier option, but it is a mountain walk with steep sections, so suit older children.
- Couples
- A sunrise or morning walk to the lake is memorable, with the refuge as a stop.
- Pair with
- A paragliding flight, a Flégère terrace lunch and a swim or dinner in town.
- Time needed
- A full day.
Good questions
Can I hike Lac Blanc in November?+
No. High-altitude hikes like Lac Blanc are only accessible in summer and autumn, depending on snow, and the Flégère gondola is currently closed.
How long is the hike?+
From the top of the Flégère gondola it is about two hours to the lake. Allow four to six hours for the round trip including the lift.
Is it suitable for beginners?+
The Flégère route is the easier option and recommended for families and beginners, but it is still a mountain walk with steep sections. The routes from Col des Montets and Tré-le-Champ are technical.
Do I need to pay?+
The walk is free. You pay only for the Flégère gondola ride from Les Praz.
When is the best time to go?+
Summer and early autumn, after the snow has gone from the path. Go early in the morning for calm water and fewer people.
