The calculated distance (air line) between Janowiec Wielkopolski and Sosnowiec is approximately 184 miles respectively 296 kilometers.
By car or train, the actual journey to Sosnowiec is certainly longer, as only the direct route (as the crow flies) between Janowiec Wielkopolski and Sosnowiec has been calculated here.
Air line (approximately)
296 kilometers
160 nautical miles