The calculated distance (air line) between Bo Phloi and Nakhon Pathom is approximately 50 miles respectively 80 kilometers.
By car or train, the actual journey to Nakhon Pathom is certainly longer, as only the direct route (as the crow flies) between Bo Phloi and Nakhon Pathom has been calculated here.
Air line (approximately)
80 kilometers
43 nautical miles