The calculated distance (air line) between Rychnov nad Kněžnou and Pardubice is approximately 24 miles respectively 38 kilometers.
By car or train, the actual journey to Pardubice is certainly longer, as only the direct route (as the crow flies) between Rychnov nad Kněžnou and Pardubice has been calculated here.
Air line (approximately)
38 kilometers
21 nautical miles