The calculated distance (air line) between Satun and Nakhon Si Thammarat is approximately 125 miles respectively 202 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 Satun and Nakhon Si Thammarat has been calculated here.
Air line (approximately)
202 kilometers
109 nautical miles