The calculated distance (air line) between Rishon LeTsiyyon and Petaẖ Tiqva is approximately 10 miles respectively 16 kilometers.
By car or train, the actual journey to Petaẖ Tiqva is certainly longer, as only the direct route (as the crow flies) between Rishon LeTsiyyon and Petaẖ Tiqva has been calculated here.
Air line (approximately)
16 kilometers
9 nautical miles