The calculated distance (air line) between Starogard Gdański and Śródmieście is approximately 158 miles respectively 255 kilometers.
By car or train, the actual journey to Śródmieście is certainly longer, as only the direct route (as the crow flies) between Starogard Gdański and Śródmieście has been calculated here.
Air line (approximately)
255 kilometers
137 nautical miles