The calculated distance (air line) between Bochum-Hordel and Boncelles is approximately 96 miles respectively 154 kilometers.
By car or train, the actual journey to Boncelles is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Boncelles has been calculated here.
Air line (approximately)
154 kilometers
83 nautical miles