The calculated distance (air line) between Kaliningrad and Nowy Dwór Gdański is approximately 66 miles respectively 105 kilometers.
By car or train, the actual journey to Nowy Dwór Gdański is certainly longer, as only the direct route (as the crow flies) between Kaliningrad and Nowy Dwór Gdański has been calculated here.
Air line (approximately)
105 kilometers
57 nautical miles