The calculated distance (air line) between Schmitten and Bochum-Hordel is approximately 102 miles respectively 164 kilometers.
By car or train, the actual journey to Bochum-Hordel is certainly longer, as only the direct route (as the crow flies) between Schmitten and Bochum-Hordel has been calculated here.
Air line (approximately)
164 kilometers
88 nautical miles