The calculated distance (air line) between Taphan Hin and Nakhon Sawan is approximately 40 miles respectively 65 kilometers.
By car or train, the actual journey to Nakhon Sawan is certainly longer, as only the direct route (as the crow flies) between Taphan Hin and Nakhon Sawan has been calculated here.
Air line (approximately)
65 kilometers
35 nautical miles