The calculated distance (air line) between Cölbe and Bochum-Hordel is approximately 83 miles respectively 133 kilometers.
By car or train, the actual journey to Bochum-Hordel is certainly longer, as only the direct route (as the crow flies) between Cölbe and Bochum-Hordel has been calculated here.
Air line (approximately)
133 kilometers
72 nautical miles