The calculated distance (air line) between Nowy Dwór Mazowiecki and Ruda Śląska is approximately 170 miles respectively 274 kilometers.
By car or train, the actual journey to Ruda Śląska is certainly longer, as only the direct route (as the crow flies) between Nowy Dwór Mazowiecki and Ruda Śląska has been calculated here.
Air line (approximately)
274 kilometers
148 nautical miles