The calculated distance (air line) between Pak Chong and Nakhon Sawan is approximately 110 miles respectively 176 kilometers.
By car or train, the actual journey to Nakhon Sawan is certainly longer, as only the direct route (as the crow flies) between Pak Chong and Nakhon Sawan has been calculated here.
Air line (approximately)
176 kilometers
95 nautical miles