The calculated distance (air line) between Santa Marta de Ortigueira and Gijón is approximately 110 miles respectively 177 kilometers.
By car or train, the actual journey to Gijón is certainly longer, as only the direct route (as the crow flies) between Santa Marta de Ortigueira and Gijón has been calculated here.
Air line (approximately)
177 kilometers
95 nautical miles