The calculated distance (air line) between Heist-op-den-Berg and Molenbeek-Saint-Jean is approximately 24 miles respectively 38 kilometers.
By car or train, the actual journey to Molenbeek-Saint-Jean is certainly longer, as only the direct route (as the crow flies) between Heist-op-den-Berg and Molenbeek-Saint-Jean has been calculated here.
Air line (approximately)
38 kilometers
21 nautical miles