Explore hiking trails around Saint-Marcel-lès-Valence, Rhône-Alpes. The best hike near Saint-Marcel-lès-Valence is Camping GCU via Route de l'Abbaye and GR95, a 12.1 mile oneway in Parc naturel régional du Vercors. Saint-Marcel-lès-Valence has population 6252.0.