The calculated distance (air line) between Diyarb Najm and At Tall al Kabīr is approximately 25 miles respectively 40 kilometers.
By car or train, the actual journey to At Tall al Kabīr is certainly longer, as only the direct route (as the crow flies) between Diyarb Najm and At Tall al Kabīr has been calculated here.
Air line (approximately)
40 kilometers
22 nautical miles