The calculated distance (air line) between Nowy Dwór Gdański and Mokotów is approximately 161 miles respectively 258 kilometers.
By car or train, the actual journey to Mokotów is certainly longer, as only the direct route (as the crow flies) between Nowy Dwór Gdański and Mokotów has been calculated here.
Air line (approximately)
258 kilometers
139 nautical miles