The calculated distance (air line) between Khārk and As Sālimīyah is approximately 136 miles respectively 219 kilometers.
By car or train, the actual journey to As Sālimīyah is certainly longer, as only the direct route (as the crow flies) between Khārk and As Sālimīyah has been calculated here.
Air line (approximately)
219 kilometers
118 nautical miles