The calculated distance (air line) between As Saffānīyah and Ar Rumaythīyah is approximately 101 miles respectively 162 kilometers.
By car or train, the actual journey to Ar Rumaythīyah is certainly longer, as only the direct route (as the crow flies) between As Saffānīyah and Ar Rumaythīyah has been calculated here.
Air line (approximately)
162 kilometers
88 nautical miles