We enter the Spanish-Portuguese fluvial border along the Guadiana River. We pass between Villareal de San Antonio, with its peculiar Pombaline architecture, and Ayamonte. After the towns of Gerreiros do Río and Foz de Odeleite, Alcoutim and Sanlúcar del Guadiana appear. On the way back we sail at full power on the calm waters of the Guadiana, and we enter the Canela district. After an entertaining sail through the marshes, Isla Cristina and our home port Marina Isla Canela will appear.