The calculated distance (air line) between Lehrte and Bochum-Hordel is approximately 134 miles respectively 215 kilometers.
By car or train, the actual journey to Bochum-Hordel is certainly longer, as only the direct route (as the crow flies) between Lehrte and Bochum-Hordel has been calculated here.
Air line (approximately)
215 kilometers
116 nautical miles