The calculated distance (air line) between Oświęcim and Ruda Śląska is approximately 22 miles respectively 35 kilometers.
By car or train, the actual journey to Ruda Śląska is certainly longer, as only the direct route (as the crow flies) between Oświęcim and Ruda Śląska has been calculated here.
Air line (approximately)
35 kilometers
19 nautical miles