The calculated distance (air line) between Kurayyimah and Ar Ramthā is approximately 31 miles respectively 50 kilometers.
By car or train, the actual journey to Ar Ramthā is certainly longer, as only the direct route (as the crow flies) between Kurayyimah and Ar Ramthā has been calculated here.
Air line (approximately)
50 kilometers
27 nautical miles