The calculated distance (air line) between Bochum-Hordel and Leerdam is approximately 93 miles respectively 150 kilometers.
By car or train, the actual journey to Leerdam is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Leerdam has been calculated here.
Air line (approximately)
150 kilometers
81 nautical miles