The calculated distance (air line) between Ar Ramthā and Ḩayy al Quwaysimah is approximately 45 miles respectively 72 kilometers.
By car or train, the actual journey to Ḩayy al Quwaysimah is certainly longer, as only the direct route (as the crow flies) between Ar Ramthā and Ḩayy al Quwaysimah has been calculated here.
Air line (approximately)
72 kilometers
39 nautical miles