The calculated distance (air line) between Mechelen-aan-de-Maas and Verviers is approximately 27 miles respectively 44 kilometers.
By car or train, the actual journey to Verviers is certainly longer, as only the direct route (as the crow flies) between Mechelen-aan-de-Maas and Verviers has been calculated here.
Air line (approximately)
44 kilometers
24 nautical miles