The calculated distance (air line) between Rishon LeTsiyyon and Ramat Gan is approximately 8 miles respectively 13 kilometers.
By car or train, the actual journey to Ramat Gan is certainly longer, as only the direct route (as the crow flies) between Rishon LeTsiyyon and Ramat Gan has been calculated here.
Air line (approximately)
13 kilometers
7 nautical miles