The calculated distance (air line) between Chai Badan and Nakhon Pathom is approximately 120 miles respectively 193 kilometers.
By car or train, the actual journey to Nakhon Pathom is certainly longer, as only the direct route (as the crow flies) between Chai Badan and Nakhon Pathom has been calculated here.
Air line (approximately)
193 kilometers
104 nautical miles