The calculated distance (air line) between Góra Kalwaria and Śródmieście is approximately 19 miles respectively 31 kilometers.
By car or train, the actual journey to Śródmieście is certainly longer, as only the direct route (as the crow flies) between Góra Kalwaria and Śródmieście has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles