The calculated distance (air line) between Yoqne‘am ‘Illit and Jaffa is approximately 46 miles respectively 75 kilometers.
By car or train, the actual journey to Jaffa is certainly longer, as only the direct route (as the crow flies) between Yoqne‘am ‘Illit and Jaffa has been calculated here.
Air line (approximately)
75 kilometers
40 nautical miles