The calculated distance (air line) between Salwá and Al Faḩāḩīl is approximately 15 miles respectively 24 kilometers.
By car or train, the actual journey to Al Faḩāḩīl is certainly longer, as only the direct route (as the crow flies) between Salwá and Al Faḩāḩīl has been calculated here.
Air line (approximately)
24 kilometers
13 nautical miles