The calculated distance (air line) between Al Khinzīrah and Ar Ramthā is approximately 107 miles respectively 172 kilometers.
By car or train, the actual journey to Ar Ramthā is certainly longer, as only the direct route (as the crow flies) between Al Khinzīrah and Ar Ramthā has been calculated here.
Air line (approximately)
172 kilometers
93 nautical miles