The calculated distance (air line) between Ursynów and Siemianowice Śląskie is approximately 153 miles respectively 247 kilometers.
By car or train, the actual journey to Siemianowice Śląskie is certainly longer, as only the direct route (as the crow flies) between Ursynów and Siemianowice Śląskie has been calculated here.
Air line (approximately)
247 kilometers
133 nautical miles