The calculated distance (air line) between Grâce-Berleur and Etterbeek is approximately 51 miles respectively 81 kilometers.
By car or train, the actual journey to Etterbeek is certainly longer, as only the direct route (as the crow flies) between Grâce-Berleur and Etterbeek has been calculated here.
Air line (approximately)
81 kilometers
44 nautical miles