The calculated distance (air line) between Bidyā and Ar Rām wa Ḑāḩiyat al Barīd is approximately 20 miles respectively 33 kilometers.
By car or train, the actual journey to Ar Rām wa Ḑāḩiyat al Barīd is certainly longer, as only the direct route (as the crow flies) between Bidyā and Ar Rām wa Ḑāḩiyat al Barīd has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles