The calculated distance (air line) between Korschenbroich and Wachtendonk is approximately 17 miles respectively 27 kilometers.
By car or train, the actual journey to Wachtendonk is certainly longer, as only the direct route (as the crow flies) between Korschenbroich and Wachtendonk has been calculated here.
Air line (approximately)
27 kilometers
15 nautical miles