The calculated distance (air line) between Bochum and Leval-Trahegnies is approximately 149 miles respectively 240 kilometers.
By car or train, the actual journey to Leval-Trahegnies is certainly longer, as only the direct route (as the crow flies) between Bochum and Leval-Trahegnies has been calculated here.
Air line (approximately)
240 kilometers
130 nautical miles