The calculated distance (air line) between Bochum-Hordel and Frankhuis is approximately 85 miles respectively 137 kilometers.
By car or train, the actual journey to Frankhuis is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Frankhuis has been calculated here.
Air line (approximately)
137 kilometers
74 nautical miles