The calculated distance (air line) between Saḩar and Aḑ Ḑāli‘ is approximately 116 miles respectively 186 kilometers.
By car or train, the actual journey to Aḑ Ḑāli‘ is certainly longer, as only the direct route (as the crow flies) between Saḩar and Aḑ Ḑāli‘ has been calculated here.