The calculated distance (air line) between Aş Şanamayn and As Salamīyah is approximately 143 miles respectively 230 kilometers.
By car or train, the actual journey to As Salamīyah is certainly longer, as only the direct route (as the crow flies) between Aş Şanamayn and As Salamīyah has been calculated here.
Air line (approximately)
230 kilometers
124 nautical miles