The calculated distance (air line) between Sint-Gillis-Waas and Etterbeek is approximately 29 miles respectively 47 kilometers.
By car or train, the actual journey to Etterbeek is certainly longer, as only the direct route (as the crow flies) between Sint-Gillis-Waas and Etterbeek has been calculated here.
Air line (approximately)
47 kilometers
25 nautical miles