The calculated distance (air line) between Houdeng-Aimeries and Anderlecht is approximately 26 miles respectively 41 kilometers.
By car or train, the actual journey to Anderlecht is certainly longer, as only the direct route (as the crow flies) between Houdeng-Aimeries and Anderlecht has been calculated here.
Air line (approximately)
41 kilometers
22 nautical miles