The calculated distance (air line) between Ottersberg and Bochum-Hordel is approximately 139 miles respectively 223 kilometers.
By car or train, the actual journey to Bochum-Hordel is certainly longer, as only the direct route (as the crow flies) between Ottersberg and Bochum-Hordel has been calculated here.
Air line (approximately)
223 kilometers
121 nautical miles