The calculated distance (air line) between Bochum-Hordel and Tervuren is approximately 124 miles respectively 200 kilometers.
By car or train, the actual journey to Tervuren is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Tervuren has been calculated here.
Air line (approximately)
200 kilometers
108 nautical miles