The calculated distance (air line) between Viernheim and Bochum-Hordel is approximately 149 miles respectively 240 kilometers.
By car or train, the actual journey to Bochum-Hordel is certainly longer, as only the direct route (as the crow flies) between Viernheim and Bochum-Hordel has been calculated here.
Air line (approximately)
240 kilometers
129 nautical miles