The calculated distance (air line) between Katowice and Piotrków Trybunalski is approximately 85 miles respectively 136 kilometers.
By car or train, the actual journey to Piotrków Trybunalski is certainly longer, as only the direct route (as the crow flies) between Katowice and Piotrków Trybunalski has been calculated here.
Air line (approximately)
136 kilometers
73 nautical miles