A circuit rated as difficult running on both sides of the Durance, starting from L'Argentière-la-Bessée.

This circuit runs above the town of L'Argentière-la-Bessée. Stunning views of its industrial past (Pechiney factory), its exploitation of water (the hydroelectric power station) and the iconic ridge, the Crête de la Rortie. Then, a stretch running close to the Canyon de l'Ascension via La Roche-de-Rame and back along the right-hand bank of the Durance.