The calculated distance (air line) between Bochum-Hordel and Wuppertal is approximately 17 miles respectively 27 kilometers.
By car or train, the actual journey to Wuppertal is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Wuppertal has been calculated here.
Air line (approximately)
27 kilometers
15 nautical miles