The calculated distance (air line) between Nakhon Ratchasima and Bang Kruai is approximately 136 miles respectively 218 kilometers.
By car or train, the actual journey to Bang Kruai is certainly longer, as only the direct route (as the crow flies) between Nakhon Ratchasima and Bang Kruai has been calculated here.
Air line (approximately)
218 kilometers
118 nautical miles