The calculated distance (air line) between Az̧ Z̧āhirīyah and Ḩalḩūl is approximately 14 miles respectively 23 kilometers.
By car or train, the actual journey to Ḩalḩūl is certainly longer, as only the direct route (as the crow flies) between Az̧ Z̧āhirīyah and Ḩalḩūl has been calculated here.
Air line (approximately)
23 kilometers
12 nautical miles