The calculated distance (air line) between Taphan Hin and Nakhon Pathom is approximately 168 miles respectively 270 kilometers.
By car or train, the actual journey to Nakhon Pathom is certainly longer, as only the direct route (as the crow flies) between Taphan Hin and Nakhon Pathom has been calculated here.
Air line (approximately)
270 kilometers
146 nautical miles