The calculated distance (air line) between Kantang and Nakhon Si Thammarat is approximately 77 miles respectively 125 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 Kantang and Nakhon Si Thammarat has been calculated here.
Air line (approximately)
125 kilometers
67 nautical miles