The calculated distance (air line) between Kranuan and Nakhon Ratchasima is approximately 136 miles respectively 220 kilometers.
By car or train, the actual journey to Nakhon Ratchasima is certainly longer, as only the direct route (as the crow flies) between Kranuan and Nakhon Ratchasima has been calculated here.
Air line (approximately)
220 kilometers
118 nautical miles