The calculated distance (air line) between Ḩayy al Bunayyāt and Saḩāb is approximately 7 miles respectively 12 kilometers.
By car or train, the actual journey to Saḩāb is certainly longer, as only the direct route (as the crow flies) between Ḩayy al Bunayyāt and Saḩāb has been calculated here.
Air line (approximately)
12 kilometers
6 nautical miles