The calculated distance (air line) between Bochum-Hordel and Aywaille is approximately 96 miles respectively 155 kilometers.
By car or train, the actual journey to Aywaille is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Aywaille has been calculated here.
Air line (approximately)
155 kilometers
84 nautical miles