The calculated distance (air line) between Nakhon Ratchasima and Sattahip is approximately 178 miles respectively 287 kilometers.
By car or train, the actual journey to Sattahip is certainly longer, as only the direct route (as the crow flies) between Nakhon Ratchasima and Sattahip has been calculated here.
Air line (approximately)
287 kilometers
155 nautical miles