The calculated distance (air line) between Nowy Dwór Gdański and Gdynia is approximately 32 miles respectively 51 kilometers.
By car or train, the actual journey to Gdynia is certainly longer, as only the direct route (as the crow flies) between Nowy Dwór Gdański and Gdynia has been calculated here.
Air line (approximately)
51 kilometers
28 nautical miles