The calculated distance (air line) between Diyarb Najm and Basyūn is approximately 39 miles respectively 63 kilometers.
By car or train, the actual journey to Basyūn is certainly longer, as only the direct route (as the crow flies) between Diyarb Najm and Basyūn has been calculated here.
Air line (approximately)
63 kilometers
34 nautical miles