The calculated distance (air line) between Bnei Ayish and Kfar Saba is approximately 29 miles respectively 46 kilometers.
By car or train, the actual journey to Kfar Saba is certainly longer, as only the direct route (as the crow flies) between Bnei Ayish and Kfar Saba has been calculated here.
Air line (approximately)
46 kilometers
25 nautical miles