The calculated distance (air line) between Nowy Dwór Mazowiecki and Sosnowiec is approximately 164 miles respectively 263 kilometers.
By car or train, the actual journey to Sosnowiec is certainly longer, as only the direct route (as the crow flies) between Nowy Dwór Mazowiecki and Sosnowiec has been calculated here.
Air line (approximately)
263 kilometers
142 nautical miles