The calculated distance (air line) between Bochum-Hordel and Nalinnes is approximately 144 miles respectively 232 kilometers.
By car or train, the actual journey to Nalinnes is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Nalinnes has been calculated here.
Air line (approximately)
232 kilometers
125 nautical miles