The calculated distance (air line) between Santa Iria da Azóia and Ermesinde is approximately 167 miles respectively 268 kilometers.
By car or train, the actual journey to Ermesinde is certainly longer, as only the direct route (as the crow flies) between Santa Iria da Azóia and Ermesinde has been calculated here.
Air line (approximately)
268 kilometers
145 nautical miles