Explore hiking trails around Bonlieu-sur-Roubion, Rhône-Alpes. The best hike near Bonlieu-sur-Roubion is La Châtaigneraie Loop via Les_Crottes, a 5.6 mile loop in Réserve naturelle des gorges de l'Ardèche. Bonlieu-sur-Roubion has population 464.0.