The calculated distance (air line) between Ramat Gan and Hod HaSharon is approximately 7 miles respectively 12 kilometers.
By car or train, the actual journey to Hod HaSharon is certainly longer, as only the direct route (as the crow flies) between Ramat Gan and Hod HaSharon has been calculated here.
Air line (approximately)
12 kilometers
6 nautical miles