Explore hiking trails around Saint-Symphorien-sous-Chomérac, Rhône-Alpes. The best hike near Saint-Symphorien-sous-Chomérac is La Châtaigneraie Loop via Les_Crottes, a 5.6 mile loop in Réserve naturelle des gorges de l'Ardèche. Saint-Symphorien-sous-Chomérac has population 822.0.