The calculated distance (air line) between Amnat Charoen and Nakhon Ratchasima is approximately 179 miles respectively 288 kilometers.
By car or train, the actual journey to Nakhon Ratchasima is certainly longer, as only the direct route (as the crow flies) between Amnat Charoen and Nakhon Ratchasima has been calculated here.
Air line (approximately)
288 kilometers
156 nautical miles