The calculated distance (air line) between Ash Shāmīyah and Umm Qaşr is approximately 48 miles respectively 77 kilometers.
By car or train, the actual journey to Umm Qaşr is certainly longer, as only the direct route (as the crow flies) between Ash Shāmīyah and Umm Qaşr has been calculated here.
Air line (approximately)
77 kilometers
41 nautical miles