The calculated distance (air line) between Qiryat Yam and Kfar Saba is approximately 48 miles respectively 77 kilometers.
By car or train, the actual journey to Kfar Saba is certainly longer, as only the direct route (as the crow flies) between Qiryat Yam and Kfar Saba has been calculated here.
Air line (approximately)
77 kilometers
41 nautical miles