The calculated distance (air line) between Bochum-Hordel and Gistel is approximately 183 miles respectively 295 kilometers.
By car or train, the actual journey to Gistel is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Gistel has been calculated here.
Air line (approximately)
295 kilometers
159 nautical miles