The calculated distance (air line) between Saint-Josse-ten-Noode and Genk is approximately 50 miles respectively 80 kilometers.
By car or train, the actual journey to Genk is certainly longer, as only the direct route (as the crow flies) between Saint-Josse-ten-Noode and Genk has been calculated here.
Air line (approximately)
80 kilometers
43 nautical miles