The calculated distance (air line) between Santa Marta de Ortigueira and Coristanco is approximately 56 miles respectively 90 kilometers.
By car or train, the actual journey to Coristanco is certainly longer, as only the direct route (as the crow flies) between Santa Marta de Ortigueira and Coristanco has been calculated here.
Air line (approximately)
90 kilometers
49 nautical miles