The calculated distance (air line) between Tha Mai and Nakhon Ratchasima is approximately 162 miles respectively 261 kilometers.
By car or train, the actual journey to Nakhon Ratchasima is certainly longer, as only the direct route (as the crow flies) between Tha Mai and Nakhon Ratchasima has been calculated here.
Air line (approximately)
261 kilometers
141 nautical miles