The calculated distance (air line) between Lüdenscheid and Hückeswagen is approximately 13 miles respectively 21 kilometers.
By car or train, the actual journey to Hückeswagen is certainly longer, as only the direct route (as the crow flies) between Lüdenscheid and Hückeswagen has been calculated here.
Air line (approximately)
21 kilometers
11 nautical miles