The calculated distance (air line) between Fosses-la-Ville and Etterbeek is approximately 33 miles respectively 53 kilometers.
By car or train, the actual journey to Etterbeek is certainly longer, as only the direct route (as the crow flies) between Fosses-la-Ville and Etterbeek has been calculated here.
Air line (approximately)
53 kilometers
29 nautical miles