The calculated distance (air line) between Mechelen-aan-de-Maas and Charleroi is approximately 67 miles respectively 107 kilometers.
By car or train, the actual journey to Charleroi is certainly longer, as only the direct route (as the crow flies) between Mechelen-aan-de-Maas and Charleroi has been calculated here.
Air line (approximately)
107 kilometers
58 nautical miles