The calculated distance (air line) between Bochum-Hordel and Wattrelos is approximately 180 miles respectively 290 kilometers.
By car or train, the actual journey to Wattrelos is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Wattrelos has been calculated here.
Air line (approximately)
290 kilometers
157 nautical miles