The calculated distance (air line) between Gliwice and Tomaszów Mazowiecki is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Tomaszów Mazowiecki is certainly longer, as only the direct route (as the crow flies) between Gliwice and Tomaszów Mazowiecki has been calculated here.
Air line (approximately)
166 kilometers
90 nautical miles