The calculated distance (air line) between Chon Buri and Nakhon Ratchasima is approximately 134 miles respectively 216 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 Buri and Nakhon Ratchasima has been calculated here.
Air line (approximately)
216 kilometers
116 nautical miles