The calculated distance (air line) between Lusail and Al Hilāl al Gharbīyah is approximately 11 miles respectively 18 kilometers.
By car or train, the actual journey to Al Hilāl al Gharbīyah is certainly longer, as only the direct route (as the crow flies) between Lusail and Al Hilāl al Gharbīyah has been calculated here.
Air line (approximately)
18 kilometers
10 nautical miles