The calculated distance (air line) between Chon Daen and Nakhon Ratchasima is approximately 118 miles respectively 190 kilometers.
By car or train, the actual journey to Nakhon Ratchasima is certainly longer, as only the direct route (as the crow flies) between Chon Daen and Nakhon Ratchasima has been calculated here.
Air line (approximately)
190 kilometers
102 nautical miles