57 - Crossing the Epine

This circuit crosses the Epine mountain range twice, once at the Col du Chat, which leads to a marvellous descent to the Lac du Bourget, and once at the Col de l'Epine, after a more strenuous climb.

A reduced variant of this double crossing can be done using the service tunnel of Tunnel du Chat, open to bikes since November 2017, allowing riders to avoid the ascent of Col du Chat.