Santiago de la Ribera Map - Above is a location map for Santiago de la Ribera on the Costa Calida, Spain. A popular seaside resort, Santiago de la Ribera is located on the Mar Menor in the Murcia region and grew due to the rich people of Murcia building second homes to escape the summer heat of Murcia. Santiago de la Ribera looks across the Mar Menor to the sports resort of La Manga, it has 4km of super sandy beaches and some excellent water sports faclities. Other popular resorts nearby include Los Alcázares, San Pedro del Pinatar and Lo Pagan.