If you want to test yourself on a stage worthy of a Grand Tour, the Marmotte Granfondo course is for you. After the serpentine Col du Lein, enjoy some twenty kilometers of flat terrain before leaving the plains for good to tackle the climbs and iconic sectors of the Tour des Stations: the Mur d'Hérémence, the Thyon 2000 alpine road and the crossing of its garage, the terrible green forest and finally the sumptuous Croix-de-Cœur.