The calculated distance (air line) between Cudillero and Corvera de Asturias is approximately 13 miles respectively 21 kilometers.
By car or train, the actual journey to Corvera de Asturias is certainly longer, as only the direct route (as the crow flies) between Cudillero and Corvera de Asturias has been calculated here.
Air line (approximately)
21 kilometers
11 nautical miles