The calculated distance (air line) between Sandomierz and Bielsko-Biala is approximately 133 miles respectively 215 kilometers.
By car or train, the actual journey to Bielsko-Biala is certainly longer, as only the direct route (as the crow flies) between Sandomierz and Bielsko-Biala has been calculated here.
Air line (approximately)
215 kilometers
116 nautical miles