The calculated distance (air line) between Qiryat Ye‘arim and Kfar Saba is approximately 28 miles respectively 45 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 Ye‘arim and Kfar Saba has been calculated here.
Air line (approximately)
45 kilometers
24 nautical miles