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