The calculated distance (air line) between Al Faḩāḩīl and Ar Rābiyah is approximately 19 miles respectively 30 kilometers.
By car or train, the actual journey to Ar Rābiyah is certainly longer, as only the direct route (as the crow flies) between Al Faḩāḩīl and Ar Rābiyah has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles