The calculated distance (air line) between Bochum-Hordel and Grevenbroich is approximately 38 miles respectively 62 kilometers.
By car or train, the actual journey to Grevenbroich is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Grevenbroich has been calculated here.
Air line (approximately)
62 kilometers
33 nautical miles