The calculated distance (air line) between Louvain-la-Neuve and Schaerbeek is approximately 17 miles respectively 28 kilometers.
By car or train, the actual journey to Schaerbeek is certainly longer, as only the direct route (as the crow flies) between Louvain-la-Neuve and Schaerbeek has been calculated here.
Air line (approximately)
28 kilometers
15 nautical miles