The calculated distance (air line) between Nakhon Ratchasima and Maha Sarakham is approximately 116 miles respectively 186 kilometers.
By car or train, the actual journey to Maha Sarakham is certainly longer, as only the direct route (as the crow flies) between Nakhon Ratchasima and Maha Sarakham has been calculated here.
Air line (approximately)
186 kilometers
101 nautical miles