The calculated distance (air line) between Selters and Bochum-Hordel is approximately 84 miles respectively 134 kilometers.
By car or train, the actual journey to Bochum-Hordel is certainly longer, as only the direct route (as the crow flies) between Selters and Bochum-Hordel has been calculated here.
Air line (approximately)
134 kilometers
73 nautical miles