The calculated distance (air line) between Na Klang and Nakhon Ratchasima is approximately 162 miles respectively 260 kilometers.
By car or train, the actual journey to Nakhon Ratchasima is certainly longer, as only the direct route (as the crow flies) between Na Klang and Nakhon Ratchasima has been calculated here.
Air line (approximately)
260 kilometers
140 nautical miles