The calculated distance (air line) between Ramat HaSharon and Bet Shemesh is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Bet Shemesh is certainly longer, as only the direct route (as the crow flies) between Ramat HaSharon and Bet Shemesh has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles