The calculated distance (air line) between Charleroi and Woluwe-Saint-Lambert is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Woluwe-Saint-Lambert is certainly longer, as only the direct route (as the crow flies) between Charleroi and Woluwe-Saint-Lambert has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles