The Route des Grandes Alpes is France's most spectacular mountain drive — 700 km from Thonon-les-Bains on Lake Geneva to Menton on the Mediterranean, crossing 16 Alpine passes including the legendary Col du Galibier and Col de l'Iseran (the highest paved pass in the Alps at 2,770 m). It is, by any measure, one of the world's great road trips.
| Route des Grandes Alpes Quick Facts | Detail |
|---|---|
| Distance: 700 km | |
| Passes crossed: 16 (including 6 above 2,000 m) | |
| Highest point: Col de l'Iseran, 2,770 m | |
| Driving time: 16–20 hours (non-stop); 5–7 days recommended | |
| Season: Late June to mid-October (all passes open) | |
| Direction: North to south (descending to the Mediterranean) is most popular |
The Route
- Thonon-les-Bains (0 km)Start at Lake Geneva — the French shore, with views across to Switzerland. Stock up and fill the tank.
- Col des Gets (30 km, 1,172 m)The gentle opener — a ski resort pass with Alpine meadows and cowbells.
- Col de la Colombière (80 km, 1,613 m)The first real climb — sweeping views of the Aravis range and Mont Blanc beyond.
- Col des Aravis (100 km, 1,486 m)Reblochon cheese country — buy it at farm stalls at the summit. Mont Blanc fills the southern sky.
- Beaufort (130 km)Home of Beaufort cheese — the "Prince of Gruyères." Visit a dairy for tastings.
- Cormet de Roselend (145 km, 1,968 m)A wild, lonely pass above a turquoise reservoir — one of the route's most dramatic sections.
- Bourg-Saint-Maurice (165 km)Gateway to Les Arcs and La Rosière ski resorts. Good rest stop.
- Col de l'Iseran (200 km, 2,770 m)The roof of the route — the highest paved pass in the Alps. Snow banks line the road even in July. The tiny chapel at the summit is a poignant landmark.
- Val d'Isère / Bonneval-sur-Arc (210 km)Mountain villages of stone and slate, barely changed in centuries.
- Col du Galibier (260 km, 2,642 m)The Tour de France legend — surrounded by glaciers and scree. A monument to Tour founder Henri Desgrange stands at the summit.
- Col du Lautaret (275 km, 2,058 m)Botanical garden at the pass, with spectacular views of the Meije glacier.
- Briançon (300 km)Europe's highest city (1,326 m) — Vauban's star-shaped UNESCO fortress commands the valley.
- Col d'Izoard (330 km, 2,360 m)The moonscape of the Casse Déserte — eroded pinnacles in an alien landscape. Another Tour de France giant.
- Col de Vars (380 km, 2,109 m)Gentler climb through wildflower meadows into the southern Alps.
- Col de la Cayolle (430 km, 2,326 m)Remote, empty, beautiful — chamois and marmots, few cars.
- Col de la Bonette (470 km, 2,715 m)Often claimed as the highest road in Europe (the loop road above the col reaches 2,802 m). Extraordinary panoramas.
- Col de Turini (580 km, 1,607 m)Famous from the Monte Carlo Rally — tight switchbacks through forests.
- Sospel (620 km)A pretty medieval river town — your last overnight before the coast.
- Menton (700 km)The finish — the most Italian of French towns, palm-lined and pastel, on the Mediterranean. You've crossed the Alps.
The French Alps — The geology, ecology, and landscapes of the Alpine massifs — on La Terre.
Practical Information
- All 16 passes open: Typically late June to mid-October. The Iseran and Galibier are the last to open and first to close.
- Fuel: Fill up at every opportunity — some mountain sections have no stations for 50+ km
- Vehicle: Any car can do it, but high clearance and good brakes help. Motorhomes are possible but challenging on the narrower passes.
- Cycling: The route is legendary among cyclists — allow 7–10 days on two wheels
- Accommodation: Book ahead in July–August; rifugio-style mountain inns add character
On the ground
| Pin | Working note |
|---|---|
| Route | Route des Grandes Alpes |
| Péage | Budget the tolls; they are not a surprise |
| Cols | Mountain dates are not ring-road dates |
| Train alternative | Often exists for part of the corridor |
Route des Grandes Alpes is a working page on La Porte, not a souvenir. Use it with the week you travel. Route des Grandes Alpes sits in a country that is easy to over-plan and easy to under-prepare. The routes layer is where visitors collect names. This page is the opposite: what to do first, what to skip, and which sibling guide holds the rest.
France rewards a slow unit. One arrondissement, one valley, one appellation, one park trail. The photograph of five landmarks in five days is a real holiday, and it is also a queue with a passport. If you only have three nights, spend two of them in the same bed. The third night is for a train, not a third hotel.
Working a visit
Practical France is sockets (Type E/F, 230 V), tap water that is safe, pharmacies that are the real clinic for minor trouble, and a lunch hour that still closes a village. Cards work in cities. Cash still opens some park kiosks, some island boats, and some market stalls that have never seen contactless. A lightweight adapter belongs in the personal item, not the hold.
We will not write as if every reader is on a gap year, or as if every reader is in a palace hotel. We will not flatten 'the south' into one climate. We will not treat a strike day, a jour férié, or a Tuesday museum closure as a personality quirk of the French. They are calendars. Check them. Then use Route des Grandes Alpes as a pin, not as scripture.
Cross the five guides instead of cloning them. La Porte holds trains and the first week. La Terre holds weather and park gates. L'Esprit holds museum Tuesdays and the Revolution. La Table holds the market morning and the wine list. Le Moteur holds the Tour, the working week, and why August is empty in Paris and full on the coast.