Tour du Mont Blanc: how to plan the classic circuit

The Tour du Mont Blanc is the trek a lot of European hikers do once and remember forever. It's a roughly 170km loop around the Mont Blanc massif, passing through France, Italy and Switzerland, sleeping in mountain refuges, with a new valley and a fresh wall of peaks around every pass. Crucially, it's not a climb — it's a long, demanding walk on good paths. The planning, not the terrain, is what trips people up.

Here's how to get it right.

The shape of the trek

Most people walk the full loop in 10 to 11 days, traditionally anti-clockwise, starting and ending near Les Houches in the Chamonix valley. You climb and descend a lot — the cumulative ascent is around 10,000m over the trip — but each day is a manageable 4–7 hours, and there's a hot meal and a bed waiting at the end of it.

Short on time? Two good options:

• Walk a half-tour (e.g. the spectacular French and Italian sections) in 5–6 days.
• Use the valley lifts and buses to skip a stage or shorten big climbs — entirely normal and not cheating.

Refuges: book early, this is the catch

You sleep in mountain refuges (and some valley hotels) — dormitory bunks, a communal dinner, breakfast, and lights-out early. They are wonderful, sociable, and they fill up months ahead for the summer season. This is the number-one planning mistake: people decide on the route, then find the refuges already booked.

Two ways to handle it:

• Self-guided: you (or a tour company) book every refuge in sequence before you go. Total freedom, but you're locked to that schedule and the admin is real.
• Guided / organised self-guided: a company books the refuges, moves your main luggage between valleys, and gives you maps or a guide. More expensive, far less stress, and it solves the booking scramble in one go.

Either way: reserve refuges as early as you can, ideally several months out.

When to walk it

The season is short: roughly late June to mid-September, when the high passes are clear of snow and the refuges are open. Within that:

• July and August are warmest and busiest — book everything well ahead.
• Early September is a sweet spot: quieter trails, stable weather, autumn light, but some refuges start to close late in the month.

Outside that window the passes can hold snow and refuges shut, turning a walk into a mountaineering problem.

How hard is it, really?

If you're a regular hill walker who can handle consecutive days of 600–1,000m of climbing with a daypack, you'll be fine. It's the back-to-back days that test you, not any single section. You don't need technical skills, but you do need:

• Broken-in proper boots and trekking poles (your knees will thank you on the descents).
• A reasonable head for steep, exposed paths in places.
• Layers for genuine mountain weather — it can be hot in the valley and near-freezing on a pass the same day.

A sensible plan of attack

1. Pick your dates inside the late-June-to-mid-September window. 2. Decide self-guided vs organised. If you don't want to project-manage a dozen refuge bookings, pay someone to do it. 3. Lock the refuges (or the package) early — this is the real deadline. 4. Build in a spare day for weather; a storm can close a high pass and force a rest or a lower alternative. 5. Sort travel insurance that covers multi-day mountain trekking, and note you'll cross three countries — carry a little cash in euros and Swiss francs.

Do the planning months ahead and the Tour du Mont Blanc is exactly what it's famous for: a big, friendly, gloriously scenic walk that anyone reasonably fit can pull off.