The calculated distance (air line) between Rybnik and Siemianowice Śląskie is approximately 27 miles respectively 43 kilometers.
By car or train, the actual journey to Siemianowice Śląskie is certainly longer, as only the direct route (as the crow flies) between Rybnik and Siemianowice Śląskie has been calculated here.
Air line (approximately)
43 kilometers
23 nautical miles