The calculated distance (air line) between Kafr Shams and As Salamīyah is approximately 142 miles respectively 228 kilometers.
By car or train, the actual journey to As Salamīyah is certainly longer, as only the direct route (as the crow flies) between Kafr Shams and As Salamīyah has been calculated here.
Air line (approximately)
228 kilometers
123 nautical miles