Interlaken is connected by the A8 motorway to Thun and Lucerne, with onward connections by other Swiss motorways to the rest of Switzerland. Local roads also follow both banks of the lakes to east and west and follow the valley of the Lütschine south into the Jungfrau region. However there is no direct road connection across the mountains of that region into the canton of Valais to the south, with the nearest such connections being the Grimsel Pass to the east, or using the vehicle transport service through the Lötschberg rail tunnel to the west.