The calculated distance (air line) between Bochum-Hordel and Kraainem is approximately 125 miles respectively 202 kilometers.
By car or train, the actual journey to Kraainem is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Kraainem has been calculated here.
Air line (approximately)
202 kilometers
109 nautical miles