The calculated distance (air line) between Gliwice and Ostrowiec Świętokrzyski is approximately 127 miles respectively 204 kilometers.
By car or train, the actual journey to Ostrowiec Świętokrzyski is certainly longer, as only the direct route (as the crow flies) between Gliwice and Ostrowiec Świętokrzyski has been calculated here.
Air line (approximately)
204 kilometers
110 nautical miles