The calculated distance (air line) between Caldas da Rainha and Vila Nova de Gaia is approximately 122 miles respectively 196 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 Caldas da Rainha and Vila Nova de Gaia has been calculated here.
Air line (approximately)
196 kilometers
106 nautical miles