The calculated distance (air line) between Mechelen-aan-de-Maas and Ixelles is approximately 58 miles respectively 94 kilometers.
By car or train, the actual journey to Ixelles is certainly longer, as only the direct route (as the crow flies) between Mechelen-aan-de-Maas and Ixelles has been calculated here.
Air line (approximately)
94 kilometers
51 nautical miles