The calculated distance (air line) between 's-Gravenwezel and Etterbeek is approximately 31 miles respectively 49 kilometers.
By car or train, the actual journey to Etterbeek is certainly longer, as only the direct route (as the crow flies) between 's-Gravenwezel and Etterbeek has been calculated here.
Air line (approximately)
49 kilometers
27 nautical miles