The calculated distance (air line) between Braine-le-Château and Woluwe-Saint-Lambert is approximately 13 miles respectively 21 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 Braine-le-Château and Woluwe-Saint-Lambert has been calculated here.
Air line (approximately)
21 kilometers
11 nautical miles