The calculated distance (air line) between Braine-le-Château and La Louvière is approximately 14 miles respectively 22 kilometers.
By car or train, the actual journey to La Louvière is certainly longer, as only the direct route (as the crow flies) between Braine-le-Château and La Louvière has been calculated here.
Air line (approximately)
22 kilometers
12 nautical miles