The calculated distance (air line) between Miasteczko Śląskie and Ursynów is approximately 146 miles respectively 235 kilometers.
By car or train, the actual journey to Ursynów is certainly longer, as only the direct route (as the crow flies) between Miasteczko Śląskie and Ursynów has been calculated here.
Air line (approximately)
235 kilometers
127 nautical miles