The calculated distance (air line) between Rawai and Nakhon Si Thammarat is approximately 121 miles respectively 195 kilometers.
By car or train, the actual journey to Nakhon Si Thammarat is certainly longer, as only the direct route (as the crow flies) between Rawai and Nakhon Si Thammarat has been calculated here.
Air line (approximately)
195 kilometers
105 nautical miles