The calculated distance (air line) between Bochum-Hordel and Euskirchen is approximately 61 miles respectively 97 kilometers.
By car or train, the actual journey to Euskirchen is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Euskirchen has been calculated here.
Air line (approximately)
97 kilometers
53 nautical miles