The calculated distance (air line) between Piotrków Kujawski and Rybnik is approximately 170 miles respectively 273 kilometers.
By car or train, the actual journey to Rybnik is certainly longer, as only the direct route (as the crow flies) between Piotrków Kujawski and Rybnik has been calculated here.
Air line (approximately)
273 kilometers
147 nautical miles