The calculated distance (air line) between Bochum-Hordel and Brunssum is approximately 65 miles respectively 104 kilometers.
By car or train, the actual journey to Brunssum is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Brunssum has been calculated here.
Air line (approximately)
104 kilometers
56 nautical miles