The calculated distance (air line) between Zolder and Molenbeek-Saint-Jean is approximately 45 miles respectively 73 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 Zolder and Molenbeek-Saint-Jean has been calculated here.
Air line (approximately)
73 kilometers
39 nautical miles