The calculated distance (air line) between Pong Nam Ron and Nakhon Pathom is approximately 162 miles respectively 261 kilometers.
By car or train, the actual journey to Nakhon Pathom is certainly longer, as only the direct route (as the crow flies) between Pong Nam Ron and Nakhon Pathom has been calculated here.
Air line (approximately)
261 kilometers
141 nautical miles