The calculated distance (air line) between Rosh Ha‘Ayin and Ness Ziona is approximately 15 miles respectively 24 kilometers.
By car or train, the actual journey to Ness Ziona is certainly longer, as only the direct route (as the crow flies) between Rosh Ha‘Ayin and Ness Ziona has been calculated here.
Air line (approximately)
24 kilometers
13 nautical miles