The calculated distance (air line) between Ar Rābiyah and Al Aḩmadī is approximately 18 miles respectively 28 kilometers.
By car or train, the actual journey to Al Aḩmadī is certainly longer, as only the direct route (as the crow flies) between Ar Rābiyah and Al Aḩmadī has been calculated here.
Air line (approximately)
28 kilometers
15 nautical miles