The calculated distance (air line) between Skarżysko-Kamienna and Kraków is approximately 83 miles respectively 134 kilometers.
By car or train, the actual journey to Kraków is certainly longer, as only the direct route (as the crow flies) between Skarżysko-Kamienna and Kraków has been calculated here.
Air line (approximately)
134 kilometers
72 nautical miles