The calculated distance (air line) between Az Zawr and Al Faḩāḩīl is approximately 26 miles respectively 42 kilometers.
By car or train, the actual journey to Al Faḩāḩīl is certainly longer, as only the direct route (as the crow flies) between Az Zawr and Al Faḩāḩīl has been calculated here.
Air line (approximately)
42 kilometers
23 nautical miles