The calculated distance (air line) between Abū Kabīr and Diyarb Najm is approximately 14 miles respectively 22 kilometers.
By car or train, the actual journey to Diyarb Najm is certainly longer, as only the direct route (as the crow flies) between Abū Kabīr and Diyarb Najm has been calculated here.
Air line (approximately)
22 kilometers
12 nautical miles