The calculated distance (air line) between Wichit and Nakhon Si Thammarat is approximately 115 miles respectively 184 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 Wichit and Nakhon Si Thammarat has been calculated here.
Air line (approximately)
184 kilometers
99 nautical miles