The calculated distance (air line) between Bochum-Hordel and Wetzlar is approximately 87 miles respectively 140 kilometers.
By car or train, the actual journey to Wetzlar is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Wetzlar has been calculated here.
Air line (approximately)
140 kilometers
76 nautical miles