Explore hiking trails around Sonnac-sur-l'Hers, Languedoc-Roussillon. The best hike near Sonnac-sur-l'Hers is Puig del Coll d'Eina Loop via GR11, a 12.6 mile loop in Parc Natural de les Capçaleres del Ter i del Freser. Sonnac-sur-l'Hers has population 135.0.