The calculated distance (air line) between Bielsko-Biala and Ruda Śląska is approximately 31 miles respectively 50 kilometers.
By car or train, the actual journey to Ruda Śląska is certainly longer, as only the direct route (as the crow flies) between Bielsko-Biala and Ruda Śląska has been calculated here.
Air line (approximately)
50 kilometers
27 nautical miles