Explore hiking trails around Boulogne-sur-Gesse, Midi-Pyrénées. The best hike near Boulogne-sur-Gesse is Coret de Uelhicrestada via Camin des Banhs de Tredòs, a 17.7 mile oneway in Parc Nacional d'Aigüestortes i Estany de Sant Maurici. Boulogne-sur-Gesse has population 1656.0.