The calculated distance (air line) between Al Quşayr and As Salamīyah is approximately 44 miles respectively 71 kilometers.
By car or train, the actual journey to As Salamīyah is certainly longer, as only the direct route (as the crow flies) between Al Quşayr and As Salamīyah has been calculated here.
Air line (approximately)
71 kilometers
38 nautical miles