The calculated distance (air line) between Bochum-Hordel and Ganshoren is approximately 131 miles respectively 211 kilometers.
By car or train, the actual journey to Ganshoren is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Ganshoren has been calculated here.
Air line (approximately)
211 kilometers
114 nautical miles