The calculated distance (air line) between Laḩij and Aḑ Ḑāli‘ is approximately 45 miles respectively 73 kilometers.
By car or train, the actual journey to Aḑ Ḑāli‘ is certainly longer, as only the direct route (as the crow flies) between Laḩij and Aḑ Ḑāli‘ has been calculated here.