The calculated distance (air line) between Lüdinghausen and Bochum-Hordel is approximately 22 miles respectively 35 kilometers.
By car or train, the actual journey to Bochum-Hordel is certainly longer, as only the direct route (as the crow flies) between Lüdinghausen and Bochum-Hordel has been calculated here.
Air line (approximately)
35 kilometers
19 nautical miles