The calculated distance (air line) between Bochum-Hordel and Sassenheim is approximately 124 miles respectively 199 kilometers.
By car or train, the actual journey to Sassenheim is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Sassenheim has been calculated here.
Air line (approximately)
199 kilometers
107 nautical miles