The calculated distance (air line) between Nakhon Ratchasima and Tha Maka is approximately 173 miles respectively 278 kilometers.
By car or train, the actual journey to Tha Maka is certainly longer, as only the direct route (as the crow flies) between Nakhon Ratchasima and Tha Maka has been calculated here.
Air line (approximately)
278 kilometers
150 nautical miles