The calculated distance (air line) between Umm Qaşr and Ar Rābiyah is approximately 51 miles respectively 82 kilometers.
By car or train, the actual journey to Ar Rābiyah is certainly longer, as only the direct route (as the crow flies) between Umm Qaşr and Ar Rābiyah has been calculated here.
Air line (approximately)
82 kilometers
44 nautical miles