The calculated distance (air line) between Bochum-Hordel and Leusden is approximately 86 miles respectively 139 kilometers.
By car or train, the actual journey to Leusden is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Leusden has been calculated here.
Air line (approximately)
139 kilometers
75 nautical miles