The calculated distance (air line) between Al Khānkah and Diyarb Najm is approximately 38 miles respectively 61 kilometers.
By car or train, the actual journey to Diyarb Najm is certainly longer, as only the direct route (as the crow flies) between Al Khānkah and Diyarb Najm has been calculated here.
Air line (approximately)
61 kilometers
33 nautical miles