Regional roads are fast and well maintained, though smaller mountainous routes can be difficult to navigate and high passes may be closed in winter. A6 speeds south from Paris to Lyon—a distance of 463 km (287 miles). The Tunnel de Fourvière, which cuts through Lyon, is a classic hazard, and at peak times you may sit idling for hours. Lyon is 313 km (194 miles) north of Marseille on A7.
To make the 105-km (63-mile) trip southeast to Grenoble from Lyon, take A43 to A48. Coming from the south, take A7 to Valence and then swing east on A49 to A48 to Grenoble. From Grenoble to Megève and Chamonix through Annecy take A41–E712 to Annecy (direction Geneva), and then A40 (direction Montblanc-Chamonix). Turn off A40 at Sallanches for the 17-km (10½-mile) drive on the N212 to Megève.