The calculated distance (air line) between Berchem-Sainte-Agathe and Genk is approximately 53 miles respectively 85 kilometers.
By car or train, the actual journey to Genk is certainly longer, as only the direct route (as the crow flies) between Berchem-Sainte-Agathe and Genk has been calculated here.
Air line (approximately)
85 kilometers
46 nautical miles