The calculated distance (air line) between Santa Marta de Ortigueira and Arteixo is approximately 42 miles respectively 68 kilometers.
By car or train, the actual journey to Arteixo is certainly longer, as only the direct route (as the crow flies) between Santa Marta de Ortigueira and Arteixo has been calculated here.
Air line (approximately)
68 kilometers
37 nautical miles