Tour du Mont Blanc for Americans: Where You Can Legally Sleep
American backpackers arrive on the Tour du Mont Blanc carrying one assumption that does not survive the first evening: that if you are far enough from a road and you leave no trace, you can put a tent up.
In the Alps that is not how it works. The TMB circles the Mont Blanc massif through France, Italy and Switzerland — roughly 170 km, about 105 miles, with something in the order of 10,000 metres of cumulative ascent over seven to eleven days — and the camping law changes not only at each national border but at nearly every municipal boundary along the way. What is tolerated in Vallorcine is banned in Chamonix. What is legal above 2,500 m in Italy is illegal a hundred metres lower.
This is the single most useful thing to understand before booking a flight. You are not walking through wilderness. You are walking through a working, inhabited, densely regulated landscape — one that happens to be spectacular. Once you plan around that, the trail becomes one of the most comfortable long walks in the world. Plan around American habits and you will spend the trip either anxious or fined.
Three countries, three completely different answers
Italy is the strictest, and it is not close. All forms of parking or camping are prohibited throughout the Aosta Valley, even for stays of under 24 hours. Bivouacking is forbidden below 2,500 m, which rules out essentially the entire Italian section of the route as you actually walk it. In practice, in Italy you stay in a rifugio or on an official campsite — Val Veny and the Italian Val Ferret both have several — and there is no third option.
Switzerland is generally prohibited with narrow exceptions. Where bivouac is tolerated at all it means a single night, not in a group, above the tree line, or in a genuine emergency. It is banned outright in nature reserves, wildlife zones, quiet zones and along forest roads. And the communes differ: Orsières permits camping only at official campsites, Trient only at specific rest areas, and Bovernier and Martigny-Combe prohibit wild camping. The Swiss campsites — Camping des Glaciers at La Fouly, and the cluster around Champex — are the sane answer.
France is the most permissive and the most complicated. The general shape is that bivouac — one night, a small tent up in the evening and down in the morning — is allowed in places where camping is not, but the details are municipal. Chamonix has prohibited both camping and bivouac across its territory since 1992, with only high-altitude bivouac between sunset and sunrise as an exception, and hard bans around Lac Blanc, Montagne de Chailloux and Col des Posettes. Vallorcine allows one night between 7pm and 9am with the landowner's permission, and by default above 1,700 m. Les Houches and Saint-Gervais tolerate one night between sunset and sunrise. Bourg-Saint-Maurice maintains an official bivouac area at Les Chapieux.
And there is a 2026 change worth knowing: the Réserve Naturelle des Contamines-Montjoie now prohibits bivouac below 2,500 m from 15 June to 15 September, with mandatory online reservation for its two official sites at reserve-bivouac74.fr.
The workable rule that comes out of all this: bivouac is an evening-to-morning privilege in parts of France, and campsites or refuges are the plan everywhere else. Build the itinerary on booked nights and treat any legal bivouac as a bonus.
Book in January, or accept what is left
This is where American planning habits cost people the trip. There is no lottery, no 7am release, no refresh strategy — just a quiet, early, first-come market that Europeans have been working since winter.
Most French and Swiss refuges open bookings in January or February for the summer season; Italian ones follow in February or March. By mid-March, July and early August are effectively full at the popular huts. If Rifugio Bonatti or Refuge du Col de Balme is on your list, that decision is made in winter.
Expect €50–70 per night for dormitory half-board in France, €55–80 in Italy, and CHF 60–100 in Switzerland, which is the expensive stretch. Campsites along the route run roughly €10–25 per person per night. A self-guided seven-night trip lands somewhere around €750–1,200 for accommodation and food before flights and gear.
Half-board is worth taking rather than resisting. It means dinner and breakfast included, it removes several kilos of food from your pack, and in refuges where the kitchen is the only kitchen it is the difference between eating well and eating cold.
The border paperwork changed for Americans in 2026
Two EU systems affect this trip and neither existed the last time many people crossed an Alpine border.
The Entry/Exit System (EES) began a progressive rollout on 12 October 2025 and reached full implementation on 10 April 2026. Passport stamps are being replaced by biometric registration — facial image and fingerprints — collected on your first entry. Practically: allow noticeably more time at the airport border on arrival, particularly at Geneva, which is the standard gateway for this trail.
ETIAS, the pre-travel authorisation, is expected in the last quarter of 2026, with a six-month transitional period during which travellers can still enter without it, followed by a six-month grace period. It is not yet formally confirmed. Check its status close to departure rather than assuming either way.
The Schengen 90-in-180 rule still governs the trip length, and Switzerland is inside Schengen — so crossing into and out of it mid-walk is not a reset and not a border you queue at.
What you cannot fly with, and what to buy on arrival
The single most common gear mistake made by Americans flying to this trail is a fuel problem.
Gas canisters cannot fly. Not in checked baggage, not in the cabin, not empty, not ever. Liquid fuel bottles are also prohibited unless scrupulously cleaned, and are refused often enough that they are not worth the argument. Plan to buy fuel in Chamonix or Courmayeur, where the outdoor shops are excellent and stock the standard screw-thread canisters, and plan to leave the last one behind rather than carry it to the airport.
Two other flight notes. Trekking poles must be checked, not carried on. And a bear canister — a reflex for anyone who backpacks in California or the Rockies — is completely unnecessary here. There are no bears on this route and refuges have kitchens. That is several pounds and a great deal of pack volume you can leave at home.
What the trail is actually like, and how it changes the pack
The TMB is a hut-to-hut route through inhabited valleys, which makes it materially different from an American thru-hike of similar length.
You pass through villages. You can resupply. There are cafés at cols. Buses run in the valleys, and using one to skip a stage in bad weather is a normal, unembarrassing thing that locals do constantly. The route is waymarked well enough that navigation is a minor concern, though carrying an offline map is still sensible in cloud.
The season is roughly late June to mid-September, bounded by snow on the high cols at one end and refuge closures at the other. Within it, expect Alpine weather: a warm valley morning and an afternoon thunderstorm at 2,500 m are the same day.
What this does to the packing list is mostly subtractive. If you are staying in refuges you do not carry a tent, a sleeping bag (a liner sheet is required instead), a stove, or more than a day's food. That is the lightest big trip most people will ever do, and the right pack for it is a comfortable 30–40 litre rather than an expedition load — worth reading our Packs & Bags range with that size in mind.
If you are camping instead, the calculation flips and the constraint is that your pitch is legal and brief. A shelter you can put up at 7pm and strike at 9am without ceremony is exactly what the French bivouac rules describe, which is worth reading our Tents & Shelter range for. Nights at altitude are cold even in August, so rate your sleep system for the col rather than the valley — our Sleep & Comfort range covers that, and a liner sheet earns its place either way because refuges require one.
For everything else: a stove and cookset from our Camp Kitchen range if you are self-catering, remembering the fuel gets bought locally; a headlamp from Light & Power for early starts on the long col days; and blister care, high-factor sunscreen, and a European plug adapter from Camp Essentials.
The short version
Wild camping is illegal across most of this route — Italy bans it below 2,500 m entirely, Switzerland allows it only in narrow above-treeline exceptions, and France varies commune by commune with Chamonix banning it outright. Bivouac, where allowed, means sunset to sunrise and one night. Book refuges in January or February, because by mid-March the good ones are gone for July and August. Budget €50–100 a night for half-board. Expect biometric border registration under EES, and watch for ETIAS late in 2026. Buy your gas on arrival because it cannot fly. Leave the bear canister at home. And take the bus when the weather turns — everyone else does.
Last updated: July 2026. Municipal bivouac rules, refuge prices, reserve regulations and EU border requirements change — confirm current details with the relevant commune, the refuge and official EU travel sources before you travel.
