The calculated distance (air line) between Grodzisk Mazowiecki and Sosnowiec is approximately 142 miles respectively 228 kilometers.
By car or train, the actual journey to Sosnowiec is certainly longer, as only the direct route (as the crow flies) between Grodzisk Mazowiecki and Sosnowiec has been calculated here.
Air line (approximately)
228 kilometers
123 nautical miles