The calculated distance (air line) between Bochum-Hordel and Walcourt is approximately 147 miles respectively 237 kilometers.
By car or train, the actual journey to Walcourt is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Walcourt has been calculated here.
Air line (approximately)
237 kilometers
128 nautical miles