The calculated distance (air line) between Marchienne-au-Pont and Etterbeek is approximately 30 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 Marchienne-au-Pont and Etterbeek has been calculated here.
Air line (approximately)
47 kilometers
26 nautical miles