Roll out of Margaux and let the ride unfold: first past Château Beychevelle, then on through the Parc naturel régional du Médoc. Further along you skirt the Parc naturel marin de l'Estuaire de la Gironde et de la Mer des Pertuis before the route follows the Jalle du Sud. It's 74.8 km with 132 m of climbing, and the loop brings you back to Margaux where you started.
