The calculated distance (air line) between Rejon ulicy Mieleckiej and Gliwice is approximately 92 miles respectively 147 kilometers.
By car or train, the actual journey to Gliwice is certainly longer, as only the direct route (as the crow flies) between Rejon ulicy Mieleckiej and Gliwice has been calculated here.
Air line (approximately)
147 kilometers
79 nautical miles