The calculated distance (air line) between Bochum-Hordel and Oupeye is approximately 86 miles respectively 138 kilometers.
By car or train, the actual journey to Oupeye is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Oupeye has been calculated here.
Air line (approximately)
138 kilometers
75 nautical miles