The calculated distance (air line) between Janūb as Surrah and Ad Dasmah is approximately 7 miles respectively 11 kilometers.
By car or train, the actual journey to Ad Dasmah is certainly longer, as only the direct route (as the crow flies) between Janūb as Surrah and Ad Dasmah has been calculated here.
Air line (approximately)
11 kilometers
6 nautical miles