The calculated distance (air line) between Yavné and Rishon LeTsiyyon is approximately 7 miles respectively 11 kilometers.
By car or train, the actual journey to Rishon LeTsiyyon is certainly longer, as only the direct route (as the crow flies) between Yavné and Rishon LeTsiyyon has been calculated here.
Air line (approximately)
11 kilometers
6 nautical miles