The calculated distance (air line) between Suez and Diyarb Najm is approximately 84 miles respectively 136 kilometers.
By car or train, the actual journey to Diyarb Najm is certainly longer, as only the direct route (as the crow flies) between Suez and Diyarb Najm has been calculated here.
Air line (approximately)
136 kilometers
73 nautical miles