The calculated distance (air line) between Morlanwelz-Mariemont and Antwerpen is approximately 53 miles respectively 86 kilometers.
By car or train, the actual journey to Antwerpen is certainly longer, as only the direct route (as the crow flies) between Morlanwelz-Mariemont and Antwerpen has been calculated here.
Air line (approximately)
86 kilometers
46 nautical miles