The calculated distance (air line) between Czarna Białostocka and Praga Południe is approximately 117 miles respectively 189 kilometers.
By car or train, the actual journey to Praga Południe is certainly longer, as only the direct route (as the crow flies) between Czarna Białostocka and Praga Południe has been calculated here.
Air line (approximately)
189 kilometers
102 nautical miles