The calculated distance (air line) between Hod HaSharon and Ness Ziona is approximately 17 miles respectively 27 kilometers.
By car or train, the actual journey to Ness Ziona is certainly longer, as only the direct route (as the crow flies) between Hod HaSharon and Ness Ziona has been calculated here.
Air line (approximately)
27 kilometers
15 nautical miles