The calculated distance (air line) between Sint-Martens-Lennik and Deurne is approximately 31 miles respectively 50 kilometers.
By car or train, the actual journey to Deurne is certainly longer, as only the direct route (as the crow flies) between Sint-Martens-Lennik and Deurne has been calculated here.
Air line (approximately)
50 kilometers
27 nautical miles