The calculated distance (air line) between Skarżysko-Kamienna and Gliwice is approximately 111 miles respectively 179 kilometers.
By car or train, the actual journey to Gliwice is certainly longer, as only the direct route (as the crow flies) between Skarżysko-Kamienna and Gliwice has been calculated here.
Air line (approximately)
179 kilometers
97 nautical miles