Explore hiking trails around Neufchâtel-sur-Aisne, Champagne-Ardenne. The best hike near Neufchâtel-sur-Aisne is Voie Verte Trans Ardennes, a 12.8 mile oneway in Parc naturel régional des Ardennes. Neufchâtel-sur-Aisne has population 421.0.