The calculated distance (air line) between Bang Khun Thian and Nakhon Pathom is approximately 28 miles respectively 46 kilometers.
By car or train, the actual journey to Nakhon Pathom is certainly longer, as only the direct route (as the crow flies) between Bang Khun Thian and Nakhon Pathom has been calculated here.
Air line (approximately)
46 kilometers
25 nautical miles