The calculated distance (air line) between Bochum-Hordel and Lüdenscheid is approximately 28 miles respectively 44 kilometers.
By car or train, the actual journey to Lüdenscheid is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Lüdenscheid has been calculated here.
Air line (approximately)
44 kilometers
24 nautical miles