The calculated distance (air line) between Bochum-Hordel and Garbsen is approximately 121 miles respectively 194 kilometers.
By car or train, the actual journey to Garbsen is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Garbsen has been calculated here.
Air line (approximately)
194 kilometers
105 nautical miles