The calculated distance (air line) between Bilqās and Diyarb Najm is approximately 32 miles respectively 52 kilometers.
By car or train, the actual journey to Diyarb Najm is certainly longer, as only the direct route (as the crow flies) between Bilqās and Diyarb Najm has been calculated here.
Air line (approximately)
52 kilometers
28 nautical miles