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