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