The calculated distance (air line) between Radom and Siemianowice Śląskie is approximately 119 miles respectively 191 kilometers.
By car or train, the actual journey to Siemianowice Śląskie is certainly longer, as only the direct route (as the crow flies) between Radom and Siemianowice Śląskie has been calculated here.
Air line (approximately)
191 kilometers
103 nautical miles