The calculated distance (air line) between Niepołomice and Ruda Śląska is approximately 62 miles respectively 100 kilometers.
By car or train, the actual journey to Ruda Śląska is certainly longer, as only the direct route (as the crow flies) between Niepołomice and Ruda Śląska has been calculated here.
Air line (approximately)
100 kilometers
54 nautical miles