The calculated distance (air line) between Bīr el Maksūr and Herzliya is approximately 48 miles respectively 77 kilometers.
By car or train, the actual journey to Herzliya is certainly longer, as only the direct route (as the crow flies) between Bīr el Maksūr and Herzliya has been calculated here.
Air line (approximately)
77 kilometers
42 nautical miles