The calculated distance (air line) between Mubārak al Kabīr and Az Zawr is approximately 21 miles respectively 33 kilometers.
By car or train, the actual journey to Az Zawr is certainly longer, as only the direct route (as the crow flies) between Mubārak al Kabīr and Az Zawr has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles