Hiking Lac Blanc and Lacs des Cheserys in Chamonix
Last Updated on April 28, 2026 by Charlotte
Lac Blanc is the most popular day hike in Chamonix, and the moment you crest the final ridge to see its electric-blue waters mirroring the Mont Blanc massif, you’ll understand exactly why. But as we found, the trail up to Lac Blanc is more exposed, often snowier, and crowded than its “moderate” rating might suggest.
In this guide, we share everything you need to plan your own hike to Lac Blanc, including the three trail options, cable car logistics, what to pack, and the best time of year to make the journey.
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Our Hike to Lac Blanc
We’re usually those early-start hikers, headlamps in the parking lot, catching sunrise from the trail. But on this sunny Tuesday in June, we rolled up to the Flégère gondola during peak season and peak hour, for possibly the most popular hike in all of Chamonix.
At the gondola station, the operator was literally pushing people in to make them fit: grandparents with walking poles, families with toddlers, someone in jeans carrying what looked like a picnic basket, and one optimistic soul in Croc clogs.
From the top of the Flégère gondola, the main trail to Lac Blanc looked like a queue at Disneyland. Hundreds of hikers switchbacked in single file up the mountainside.
With tired legs from a week of hiking and that conga line in front of us, we chose to take the L’Index chairlift to the lesser-used route to Lac Blanc, which is more exposed but has much less elevation gain.
Hiking from L’Index to Lac Blanc
The Index Chairlift dropped us onto what felt like a different planet, a rocky moonscape with neon green lichen, and massive snowfields stretching between the ridges.
Fifteen minutes in, we hit our first traffic jam on a snow ledge that was barely a palm’s width wide, carved above a hundred-meter drop into jagged rocks. Halfway across the snowpack, a girl in white Nike Airs was frozen in place, tears on her cheeks, fingers dug into the snowbank for balance.
Travel Buddy and I strapped on our microspikes and crossed easily. “You’re doing great,” I told her as we passed. What I wanted to say was: Your boyfriend’s the worst for dragging you into this in those shoes. By the time Lac Blanc came into view, I’d seen enough near-misses to last the season.
Picnic Lunch on the Shores of Lac Blanc
When we crested the last rise and Lac Blanc spread out before us, sparkling in the sunlight, it was so worth the climb! The water was electric blue, partially frozen at the far end where intricate ice patterns swirled across it. Even with people everywhere, the sheer beauty of Lac Blanc was undeniable.
On the lakeshores, the Refuge du Lac Blanc was packed with visitors overflowing from the deck onto the rocks below. Every table was taken, so people had gotten creative: some perched on boulders, eating packed lunches, standing in clusters, one group with an impressive picnic spread complete with a tablecloth (good for them).
We climbed the rocks above the lake to find our own perch wedged between two boulders, our sandwiches from Chez Richard’s tasting perfect after a morning of snowfield crossings.
From up there, the whole lake was spread below us, textured like a kitten’s paw, that clear, impossibly blue that seems to glow from within, like it was beckoning us in for a swim. Unfortunately, swimming in Lac Blanc is banned to preserve water quality (which didn’t stop one unlucky woman from slipping on the rocks and face-planting into the water).
After rambling around the Lac Blanc, we set off to tackle the most dramatic section of the trail, the ladders.
The Famous “Ladders” Section and a Heli Rescue
The trail from Lac Blanc starts with steep wooden stairs spiraling down the rock face, then two ladder sections with rungs drilled straight into the mountain.
Just before the ladders, a line of nervous hikers had formed at the top. The man in front of us made it three rungs down the ladder before freezing completely, his knuckles white. It took him ten minutes to descend what should have been a 30-second climb.
Past the ladders, we waltzed along the shores of the Lacs des Cheserys, which have the most beautiful reflection of the mountains on a still and windless day.
Then, just a short fifteen minutes later, the mountain echoed with the unmistakable thrum of helicopter rotors.
On a perfect bluebird afternoon, there’s only one reason a helicopter circles a popular hiking trail, and hikers coming down filled us in on the details: apparently, an elderly woman couldn’t continue past the ladder section and needed to be evacuated.
Trail Running Lacs des Cheserys to Flégère Gondola Summit
We continued down the trail, bracing for more drama. Instead, the trail opened into something magical. We started running, enjoying the feeling of flying through meadows that were absolutely exploding with wildflowers.
June might mean snow up high, but down here it meant peak bloom, with riots of buttercup yellows, purples, and pinks scattered everywhere like someone had thrown confetti across the mountainside. We were literally running through clouds of color.
Now and then, little waterfalls and alpine streams cut across the trail, some with bridges, and some with stepping stones. We splashed across one, then another, then gave up trying to keep our feet dry and just flew through the water, cold spray hitting our legs, laughing like idiots.
For the next forty-five minutes, nothing existed except the rhythm of our feet on the trail, the mountain air in our lungs, and that pure, simple joy of moving fast and strong. No crowds, no traffic jam drama. Just two people absolutely bombing down a mountain trail, whooping at the good sections, high-fiving at the water crossings.
We passed a few groups of uphill hikers who pressed themselves against the slope to let us by, some amused, some annoyed at our speed. I wanted to grab them and say, “Forget Lac Blanc! Just run this section! This is the real treasure!” This was possibly the best trail running I’ve ever run in my entire life!
By the time we reached the Flégère mid-station, my shoes were soaked, and I couldn’t stop smiling. We sat outside the gondola station, eating ice cream, blissed out — until the radio crackled behind the bar. Another rescue!! We watched a staff member drive a truck up the gravel ski slope and bounce back down twenty minutes later with three or four hikers in the back, their poles sticking up like porcupine quills.
Lac Blanc was one of the most spectacular days either of us had ever spent in the mountains, and also the trail where we’d watched the most people get in over their heads and need to get rescued in Chamonix. So, here’s everything you need to know before you go to have the best hike ever, or to realize that this hike is really not a good fit for you.
How to Hike Lac Blanc in Chamonix
There’s more than one way to hike to Lac Blanc, and the right route depends on how much elevation you want to climb, how confident you are on rugged terrain, and what kind of experience you’re after.
Here’s how the most popular routes compare:
Lac Blanc Loop Trail from Flégère Gondola (Most Popular)
This is the classic Lac Blanc route, and it’s popular for a reason. While the trail is straightforward (if not steep), it visits both lakes without requiring technical hiking skills. Expect crowds, especially after 10 a.m. in the peak summer months.
Trail stats:
- Distance: 8.05 km / 5.0 mi
- Elevation gain: +564 m / 1,850 ft
- Duration: ~4 hours
- Trail type: Loop
- Start/end: Flégère gondola
- Trail conditions: Well-marked, steady climb, mostly dirt and rock
- Trail profile on Visorando
Point-to-Point Trail from L’Index to Flégère (What We Did)
This upper trail to Lac Blanc from the L’Index chairlift saves a significant amount of elevation climb in exchange for a more rugged, less popular trail. However, just because it’s flatter does not mean that it is not the “easier” trail!
We hiked this route in mid-June and found that many sections still had large swaths of snowpack blanketing the trail. In any season, parts of this upper trail are narrow and exposed, with steep drop-offs and loose scree. If you have reduced mobility or small children with poor coordination, you’ll be better off taking the loop from Flégère.
Trail stats:
- Distance: 7.61 km / 4.7 mi
- Elevation gain: +185 m / 607 ft
- Duration: ~4 hours
- Trail type: Point-to-point (lift at both ends)
- Start: L’Index chairlift
- End: Flégère gondola
- Trail conditions: Narrow, rocky, exposed, may hold snow into July
- Trail profile on Visorando
That said, the route is absolutely stunning and far less crowded than the popular Flégère loop. If you’re confident with rugged terrain, we think it’s 100% worth it.
Best Times to Hike Lac Blanc
The best time to hike to Lac Blanc is from July through mid-September.
In the shoulder seasons, and even during early summer in June and sometimes early July, the trail can still be covered in snow, particularly on the Index route or on the steeper section coming up from Cheserys to Lac Blanc. These snowy sections can be steep and slippery, and if you’re not used to traversing snow with exposure, it can get scary fast.
By late July, most of the snow is gone, and the lakes are fully thawed, with alpine wildflowers in full bloom and wildlife like marmots sunbathing on rocks. August brings more stable weather but also the most people. It’s still worth it — just expect the crowds, especially after 10 a.m. And in September, the trail tends to stay dry and accessible until mid-month, and the crowds thin out considerably.
Most of the summer lifts stop running in mid- to late September, which makes access trickier unless you’re hiking up from the valley floor.
Getting to the Flégère Cable Car
The Flégère gondola is in the village of Les Praz, about 2.5 km north of Chamonix Centre, and it’s the starting point for both the classic Lac Blanc loop and the L’Index route. Getting there is easy by public transport, car, or even on foot.
By Bus
The Chamonix Bus Line #1 and #2 run frequently between Chamonix Centre and Le Tour, with a stop right at Les Praz – Flégère. It’s free with your Chamoinx Multipass, or tickets are 50% off a Carte d’Hôte (guest card), which most accommodations provide.
By Train
The Mont-Blanc Express train line stops at Les Praz Station, just a 5-minute walk from the gondola. This is especially convenient if you’re staying in Argentière, Vallorcine, or even Les Houches. Like the bus, the train is free with your guest card.
By Car
There’s a small paid parking lot at the base of the lift. It fills up fast in peak season, so aim to arrive early—especially if you’re planning to ride both the Flégère and Index lifts.
On Foot
If you’re staying in Chamonix Centre, it’s a flat 30–40 minute walk to Les Praz via the riverside trail or roadside sidewalk. It’s a scenic way to warm up before your hike.
Cable Car Tickets and the Mont Blanc Multipass
If you’re hiking to Lac Blanc, there’s a good chance you’ll be riding at least one lift to save elevation, skip a long approach, or access the scenic Index route. You can check out the most up-to-date pricing and purchase tickets online from Mont Blanc Natural Resort. We used our Mont Blanc Summer Multipasses, which gave us free rides on both the Flégère + Index lifts.
2026 Flégère gondola Prices (Les Praz ↔ Flégère mid-station)
- One-way adult: €19 (up from €18.50)
- Round-trip adult: €25 (up from €24)
- One-way child (5–14): €16.20
- Round-trip child (5–14): €21.30
- Family pass: €77.60
- Children under 5: free
2026 Combined Flégère + Index ticket (this is what you need for the L’Index point-to-point route)
- Adult: €33 (1 round-trip on Flegere section + 1 one-way on the Index section)
- Children & seniors: €28.10
2026 Summer Flégère Operating Dates
- Closed: April 13 – June 19, 2026
- Open: June 20 – September 13, 2026 (daily)
- June 20 – July 10: 8:35am – 5pm (last ascent: Flégère 4:30pm / Index 4:00pm)
- July 11 – August 30: 8:20am – 6pm (peak hours; last ascent: Flégère 5:30pm / Index 5:00pm)
- August 31 – September 13: 8:35am – 5pm
Facilities on the Trail
This hike may start with a gondola, but once you’re on the trail, you’re mostly on your own, so plan ahead for food, water, and bathroom breaks.
Toilets
- At the Flégère base station in Les Praz (public toilets)
- At the Flégère mid-station (where the gondola drops you off)
- At Refuge du Lac Blanc, when it’s open for the season (usually mid-June to late September)
There are no toilets at Lacs des Cheserys or anywhere along the trails between the lakes, so go before you start your hike.
Food
The Refuge du Lac Blanc serves basic alpine meals, snacks, and drinks during the summer season, but don’t count on it being open in early June or late September. The Flégère mid-station sometimes has a small snack bar, but it’s hit or miss.
I recommend bringing your own snacks or picnic lunch, especially if you’re doing the longer Grand Balcon Sud approach or hiking outside peak season.
Water
There is no potable water on the trail or at Lacs des Cheserys. The Refuge du Lac Blanc may have water available, but it’s not guaranteed and if they’re hauling water up by helicopter, they won’t be thrilled about handing it out for free.
Bring at least 1.5 to 2 liters per person, especially if you’re hiking in full sun or taking the longer route.
Trail Accessibility
If you’re hiking Lac Blanc with kids, the classic loop from Flégère is the most manageable, but it still requires solid shoes and attention to footing. In early summer, the trail involves steep sections, rock scrambles, and occasional snowfields. It is not stroller-friendly and not recommended for anyone with poor footing or mobility issues.
However, on our walk, we did see families with baby backpacks, and even some quite fit grannies successfully make it down the trail.
What to Pack for Hiking Lac Blanc
- Hiking shoes or boots with good traction (trail runners work fine for this relatively gentle terrain)
- Layered clothing – the weather in the alps can change quickly, even in summer
- Sun protection – hat, sunglasses, and sunscreen (the alpine sun is stronger than you might expect)
- Water bottle (bring at least 1-2 liters of water per person)
- I recommend using a hydration bladder for hands-free drinking or an insulated water bottle to keep your water cold on warm days. Both options are perfect for long hikes!
- Small backpack for snacks, layers, and camera gear
- We have the Osprey Talon / Osprey Tempest day packs, and a Gregory Jade day pack. All of them are super comfy.
- Camera – you’ll want to capture the spectacular mountain views
- Cash (euros) for refuges and parking
- Trail map or AllTrails app (downloaded offline before your hike)
- Light rain jacket or poncho, even on clear days (mountain weather is unpredictable)
- I have a Mammut Rain Jacket that is super lightweight, and packs down to about the size of a large potato.
- Trekking poles (optional, but helpful fo
- While trekking poles are super popular with hikers from Germany and Austria, I don’t tend to use them often, as they’re not really needed for hiking at home in Hawaii. However, they can be helpful on steeper or downhill sections if you prefer extra stability. My personal set came from Costco, and I got them for just $20 USD, which works just fine for most hikes.
- Microspikes – We’ve enjoyed using Kahtoola Microspikes because they’re low profile enough to carry in my trail running vest, easy to slip on and off, and have excellent traction.
Ready to Plan Your Trip to Chamonix?
Be sure to check out our guide on the best places to stay in the Chamonix valley, and our full Chamonix Travel Guide.
