The Tour du Mont Blanc French section covers approximately 80 kilometres of the iconic 171-kilometre circumnavigation of the Mont Blanc massif, linking Chamonix to Les Houches through Haute-Savoie in the Auvergne-Rhône-Alpes region. Hikers begin at Place du Triangle de l'Amitié in Chamonix (1,035m) and traverse some of the most celebrated alpine terrain in Europe, following the GR TMB waymarks — red-and-white paint marks on rocks and trees — via the Col du Bonhomme (2,329m), the Aiguille des Glaciers ridge, and the pastoral Vallée de Contamines-Montjoie before looping back through Les Houches.
The trailhead is a 5-minute walk from Chamonix-Mont-Blanc railway station, served by Mont Blanc Express trains from Saint-Gervais-les-Bains (1 hour) and TGV connections from Paris Gare de Lyon. Paid parking is available near Place du Triangle de l'Amitié. No permit is required for the French section, though crossing into Italy or Switzerland on the standard route requires a passport or EU identity card.
The terrain ranges from compacted dirt paths and stone-paved mule tracks through larch and conifer forest to open rocky ridges above 2,500 metres. Sustained ascents involve scree and loose limestone; exposed sections occur near the Col des Montets and on ridge traverses above the Chamonix valley. Shade is present through forested lower sections but minimal above treeline.
Key landmarks include the Lac Blanc refuge (2,352m) with mirror-like reflections of the Aiguilles Rouges, the flower-filled Vallée de Bérard, and traditional stone bergeries on pastoral slopes. Mountain refuges are spaced every 8–15 kilometres and offer half-board accommodation at approximately €55–70 per person per night. No reliable water sources exist above Col du Bonhomme — hikers should fill water bottles at refuges and marked water points. Emergency shelters are indicated on IGN TOP25 maps. Trekking poles are strongly advisable on scree sections; crampons are rarely required in the standard summer season but snow can persist on high passes into early July.
Trail facts
- Trail area
- Chamonix to Les Houches, Haute-Savoie
- Best season
- Late June to mid-September
What to bring
Trekking boots, trekking poles, rain gear, warm mid-layer, sunscreen SPF 50+, headlamp; reserve TMB refuges 4–6 months ahead via each refuge website; cost approx €55–70 per person half-board (approx USD 60–76)
Location
Place du Triangle de l'Amitié, 74400 Chamonix-Mont-Blanc
45.9238, 6.8695 View on map
Highlights
- Mirror reflections of the Aiguilles Rouges from Lac Blanc refuge at 2,352m — one of the most iconic alpine views in Europe
- Chamonix valley panorama from the high ridge traverse above Plan de l'Aiguille
- Pastoral meadows and traditional stone bergeries of the Vallée de Contamines-Montjoie
- Waymarked GR TMB linking France, Italy, and Switzerland through the heart of the Mont Blanc massif
- Alpine wildflower carpets on lower-elevation sections from late June through late July
Tips for visiting
- Book TMB refuges 4–6 months in advance — most open bookings in January and popular huts fill within days
- Carry at least €50 in cash; many mountain refuges along the French section do not accept credit cards
- Acclimatise for 24 hours in Chamonix (1,035m) before starting — altitude symptoms are common on passes above 2,500m
- Download offline maps on IGN Rando or Komoot before departing — mobile signal is absent on most high passes
- Walk anti-clockwise (via Argentière) to tackle the most scenic ridge sections after legs have adjusted to sustained alpine ascents
When to visit
Late June to mid-September offers reliable snow-free conditions and open refuges. Dawn departures (around 7:00 AM) beat afternoon cloud build-up common over the Alps in July and August.
Accessibility
The Tour du Mont Blanc French section is not wheelchair- or stroller-accessible. The trail involves sustained steep ascents, scree, rocky ridges above 2,000 metres, and remote terrain requiring full alpine fitness and mobility.
Frequently asked questions
Do hikers need a permit for the Tour du Mont Blanc French section?
No permit is required for the French section itself. The standard route dips into Italy and Switzerland on some stages, so a valid passport or EU identity card is needed for all hikers on those crossings.
How far in advance should TMB refuges be booked?
Most refuges open online bookings in January for the coming summer. Popular huts such as Refuge du Col de la Croix du Bonhomme fill within days of opening; booking 4–6 months ahead is strongly recommended for July and August dates.
Is the Tour du Mont Blanc suitable for beginners?
The TMB requires solid hiking fitness and prior experience on steep alpine terrain. Individual stages average 12–20 kilometres with 800–1,200m of elevation gain per day, and are not recommended for first-time hikers without mountain experience.
What is the best season for the French section of the Tour du Mont Blanc?
Late June to mid-September offers the most reliable conditions. High passes may retain snow into early June, and autumn storms can close sections after mid-September.