Tour du Mont Blanc Trail

Quick overview: A 170 km, 10-11 day circumnavigation of the Mont Blanc massif through France, Italy and Switzerland.

Time to Hike: 10-11 days covering about 170 km; most walkers plan 9 to 12 stages so days are a mix of long approaches and shorter summit-style stages.

Best Time to Go: High season is midsummer when most refuges and services operate; shoulder months are possible with route variations and snow caution.

Getting there: Regular international flights go to Geneva with onward buses and trains to the trailheads around Chamonix and Les Houches. Many itineraries start or finish in Chamonix.

Costs: Budget depends on accommodation choices; expect higher daily costs if staying in mountain refuges and eating hut dinners. There is no single route permit, but refuges and some campsites should be booked in July and August.

Difficulty: Moderate to strenuous: sustained ascents and descents on alpine trails, uneven rocky paths and some exposed sections. Weather changes and occasional lingering snow can increase difficulty.

The route circles the Mont Blanc massif and alternates open alpine passes, glacier-framed valleys and pastures dotted with stone villages. You move from the high, glaciated skyline to wooded lower valleys, passing viewpoints that frame Mont Blanc and neighbouring peaks.

Accommodation is a mix of mountain refuges, small guesthouses and valley hotels; campsites exist in several valleys but wild camping rules vary by country. Highlights include classic mountain towns such as Chamonix and Courmayeur, intimate village stops like Champex-Lac and continual panoramic views rather than a single summit objective. The trail is notable for its international flavour - changing language, food and mountain traditions as you cross borders.

The nearest major airport is Geneva, with frequent shuttle buses and trains to Chamonix and nearby towns. Regional trains and buses connect other trailheads such as Les Houches and valley access points; many walkers arrive by public transport to avoid parking issues.

Most people begin in Chamonix or Les Houches and tackle the loop so that the high mountains are on one side of the valley; both clockwise and counterclockwise itineraries are common and well served by accommodations and transport.

The walkable season is generally late June to mid-September when most high passes are free of persistent snow and refuges are open. In July and August expect the fullest services and busiest trails; book refuges and popular gites in advance for that period.

Outside the core months you may encounter significant snow on higher cols and shorter daylight plus a higher risk of afternoon thunderstorms. No general permit is required but check open dates for specific refuges and local campsite rules before setting out.