The calculated distance (air line) between Bochum-Hordel and Diekirch is approximately 121 miles respectively 195 kilometers.
By car or train, the actual journey to Diekirch is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Diekirch has been calculated here.
Air line (approximately)
195 kilometers
105 nautical miles