The calculated distance (air line) between Si Sa Ket and Nakhon Ratchasima is approximately 149 miles respectively 240 kilometers.
By car or train, the actual journey to Nakhon Ratchasima is certainly longer, as only the direct route (as the crow flies) between Si Sa Ket and Nakhon Ratchasima has been calculated here.
Air line (approximately)
240 kilometers
129 nautical miles