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