The calculated distance (air line) between Stembert and Woluwe-Saint-Lambert is approximately 66 miles respectively 107 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 Stembert and Woluwe-Saint-Lambert has been calculated here.
Air line (approximately)
107 kilometers
58 nautical miles