The calculated distance (air line) between Poznań and Piekary Śląskie is approximately 164 miles respectively 265 kilometers.
By car or train, the actual journey to Piekary Śląskie is certainly longer, as only the direct route (as the crow flies) between Poznań and Piekary Śląskie has been calculated here.
Air line (approximately)
265 kilometers
143 nautical miles