The calculated distance (air line) between Schönenberg-Kübelberg and Bochum is approximately 143 miles respectively 231 kilometers.
By car or train, the actual journey to Bochum is certainly longer, as only the direct route (as the crow flies) between Schönenberg-Kübelberg and Bochum has been calculated here.
Air line (approximately)
231 kilometers
125 nautical miles