Explore hiking trails around Le Châtelet-sur-Sormonne, Champagne-Ardenne. The best hike near Le Châtelet-sur-Sormonne is Le Jardinet Loop via Rue d'Hérissart and Rue de Membre, a 5.7 mile loop in Parc naturel Ardenne méridionale. Le Châtelet-sur-Sormonne has population 170.0.