The calculated distance (air line) between Ksour Essaf and Houmt El Souk is approximately 107 miles respectively 172 kilometers.
By car or train, the actual journey to Houmt El Souk is certainly longer, as only the direct route (as the crow flies) between Ksour Essaf and Houmt El Souk has been calculated here.
Air line (approximately)
172 kilometers
93 nautical miles