Beach of Arealonga Nature · Barreiros, Mariña Oriental, Lugo Arealonga beach, between the parishes of Santiago de Reinante and San Miguel de Reinante, in the Lugo municipality of Barreiros, is the most extensive of the municipality's beaches: an open stretch of eight kilometers of Cantabrian coast and fine sand. It is one of the busiest beaches in the Mariña de Lugo, and it is traditional to hold a sand sculpture contest there every July 25, the feast day of Saint James. Photo: Agremon (CC BY-SA 4.0) What to see and do in Barreiros