The calculated distance (air line) between Koźmin Wielkopolski and Ruda Śląska is approximately 124 miles respectively 200 kilometers.
By car or train, the actual journey to Ruda Śląska is certainly longer, as only the direct route (as the crow flies) between Koźmin Wielkopolski and Ruda Śląska has been calculated here.
Air line (approximately)
200 kilometers
108 nautical miles