The town of Chamonix is serviced by French Route Nationale 205 (RN 205), nicknamed the Route blanche, or "white route", due to its snowiness. This is an extension of French autoroute 40 (A40), similarly nicknamed the autoroute blanche, which ends at Le Fayet, a village in the commune of Saint-Gervais-les-Bains. The 11.6-km Mont Blanc Tunnel originates here, linking Chamonix to Courmayeur in Italy. Chamonix is linked to Switzerland by what used to be RN 506a. In 2006, it was converted to a Route Départementale 1506, with a part of it integrated into RN 205. The nearest airport to Chamonix is Geneva Cointrin International and it is 88 km in distance.
Rail
Chamonix is served by the metre-gauge St Gervais-Vallorcine Line, operated by SNCF. The line from Saint Gervais (on the standard-gauge rail network) to Chamonix opened in 1901; it was extended to Vallorcine in 1908. The line holds the record for the steepest gradient on any standard (i.e. adhesion) railway.
From Vallorcine, the rail route continues over the border into Switzerland, meeting the SBB network at Martigny. This latter section, a metre-gauge cog railway, is operated by Transports de Martigny et Régions SA. The train service from Vallorcine to Martigny is known as the Mont Blanc Express. Timetables on the St Gervais-Vallorcine and Vallorcine-Martigny sections are synchronized.
The 5.1-km Montenvers Railway is a cog railway that provides access to the tourist site of Montenvers. Opened in 1909, its rail station was built next to SNCF's Chamonix station on the St Gervais-Vallorcine Line line. In fact the two stations are directly linked. Montenvers provides further tourist access to middle and high mountain areas.
Cable cars
Chamonix has one of the highest cable cars in the world, which links the town to the summit of the Aiguille du Midi at 3842 m. On the other side of the valley, another cable car links Chamonix to the viewpoint
