The calculated distance (air line) between Ḩajjah and Aḑ Ḑāli‘ is approximately 157 miles respectively 253 kilometers.
By car or train, the actual journey to Aḑ Ḑāli‘ is certainly longer, as only the direct route (as the crow flies) between Ḩajjah and Aḑ Ḑāli‘ has been calculated here.