Explore hiking trails around Castejón de Sos, Aragón. The best hike near Castejón de Sos is Cascada Cola de Caballo Loop via Senda de Los Cazadores and Senda a la Cola de Caballo, a 11.7 mile loop in Parque Nacional Ordesa y Monte Perdido. Castejón de Sos has population 834.0.