The calculated distance (air line) between Ramat HaSharon and Reẖovot is approximately 17 miles respectively 28 kilometers.
By car or train, the actual journey to Reẖovot is certainly longer, as only the direct route (as the crow flies) between Ramat HaSharon and Reẖovot has been calculated here.
Air line (approximately)
28 kilometers
15 nautical miles