The calculated distance (air line) between Ṟuwandiz and As Sulaymānīyah is approximately 88 miles respectively 142 kilometers.
By car or train, the actual journey to As Sulaymānīyah is certainly longer, as only the direct route (as the crow flies) between Ṟuwandiz and As Sulaymānīyah has been calculated here.
Air line (approximately)
142 kilometers
77 nautical miles