The calculated distance (air line) between Rudnik nad Sanem and Bielsko-Biala is approximately 148 miles respectively 238 kilometers.
By car or train, the actual journey to Bielsko-Biala is certainly longer, as only the direct route (as the crow flies) between Rudnik nad Sanem and Bielsko-Biala has been calculated here.
Air line (approximately)
238 kilometers
129 nautical miles