The calculated distance (air line) between Pran Buri and Nakhon Pathom is approximately 100 miles respectively 160 kilometers.
By car or train, the actual journey to Nakhon Pathom is certainly longer, as only the direct route (as the crow flies) between Pran Buri and Nakhon Pathom has been calculated here.
Air line (approximately)
160 kilometers
86 nautical miles