The calculated distance (air line) between Ostrzeszów and Ruda Śląska is approximately 90 miles respectively 145 kilometers.
By car or train, the actual journey to Ruda Śląska is certainly longer, as only the direct route (as the crow flies) between Ostrzeszów and Ruda Śląska has been calculated here.
Air line (approximately)
145 kilometers
78 nautical miles