The calculated distance (air line) between Sankt Leon-Rot and Bochum-Hordel is approximately 167 miles respectively 269 kilometers.
By car or train, the actual journey to Bochum-Hordel is certainly longer, as only the direct route (as the crow flies) between Sankt Leon-Rot and Bochum-Hordel has been calculated here.
Air line (approximately)
269 kilometers
145 nautical miles