The calculated distance (air line) between Zefta and Diyarb Najm is approximately 12 miles respectively 19 kilometers.
By car or train, the actual journey to Diyarb Najm is certainly longer, as only the direct route (as the crow flies) between Zefta and Diyarb Najm has been calculated here.
Air line (approximately)
19 kilometers
10 nautical miles