The calculated distance (air line) between Ar Rām wa Ḑāḩiyat al Barīd and As Samū‘ is approximately 33 miles respectively 53 kilometers.
By car or train, the actual journey to As Samū‘ is certainly longer, as only the direct route (as the crow flies) between Ar Rām wa Ḑāḩiyat al Barīd and As Samū‘ has been calculated here.
Air line (approximately)
53 kilometers
28 nautical miles