The calculated distance (air line) between Bochum-Hordel and Wolfenbüttel is approximately 151 miles respectively 243 kilometers.
By car or train, the actual journey to Wolfenbüttel is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Wolfenbüttel has been calculated here.
Air line (approximately)
243 kilometers
131 nautical miles