The calculated distance (air line) between Salas and Corvera de Asturias is approximately 20 miles respectively 33 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 Salas and Corvera de Asturias has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles