Explore hiking trails around Aulnay-sur-Marne, Champagne-Ardenne. The best hike near Aulnay-sur-Marne is Chemin Halage Canal Marne - Aisne, a 12.9 mile oneway in Parc naturel régional de la Montagne de Reims. Aulnay-sur-Marne has population 266.0.