The calculated distance (air line) between Nowa Sarzyna and Śródmieście is approximately 144 miles respectively 231 kilometers.
By car or train, the actual journey to Śródmieście is certainly longer, as only the direct route (as the crow flies) between Nowa Sarzyna and Śródmieście has been calculated here.
Air line (approximately)
231 kilometers
125 nautical miles