The calculated distance (air line) between Salvaterra de Magos and Vila Nova de Gaia is approximately 145 miles respectively 234 kilometers.
By car or train, the actual journey to Vila Nova de Gaia is certainly longer, as only the direct route (as the crow flies) between Salvaterra de Magos and Vila Nova de Gaia has been calculated here.
Air line (approximately)
234 kilometers
126 nautical miles