The calculated distance (air line) between Diyarb Najm and Kawm Ḩamādah is approximately 44 miles respectively 71 kilometers.
By car or train, the actual journey to Kawm Ḩamādah is certainly longer, as only the direct route (as the crow flies) between Diyarb Najm and Kawm Ḩamādah has been calculated here.
Air line (approximately)
71 kilometers
38 nautical miles