The calculated distance (air line) between Mubārak al Kabīr and Al Fāw is approximately 59 miles respectively 95 kilometers.
By car or train, the actual journey to Al Fāw is certainly longer, as only the direct route (as the crow flies) between Mubārak al Kabīr and Al Fāw has been calculated here.
Air line (approximately)
95 kilometers
51 nautical miles