The calculated distance (air line) between Rishon LeTsiyyon and Nahariyya is approximately 74 miles respectively 119 kilometers.
By car or train, the actual journey to Nahariyya is certainly longer, as only the direct route (as the crow flies) between Rishon LeTsiyyon and Nahariyya has been calculated here.
Air line (approximately)
119 kilometers
64 nautical miles