The calculated distance (air line) between Recklinghausen and Lüdinghausen is approximately 15 miles respectively 24 kilometers.
By car or train, the actual journey to Lüdinghausen is certainly longer, as only the direct route (as the crow flies) between Recklinghausen and Lüdinghausen has been calculated here.
Air line (approximately)
24 kilometers
13 nautical miles