The calculated distance (air line) between Az̧ Z̧āhirīyah and Nablus is approximately 58 miles respectively 94 kilometers.
By car or train, the actual journey to Nablus is certainly longer, as only the direct route (as the crow flies) between Az̧ Z̧āhirīyah and Nablus has been calculated here.
Air line (approximately)
94 kilometers
51 nautical miles