The calculated distance (air line) between Pathum Thani and Nakhon Sawan is approximately 120 miles respectively 193 kilometers.
By car or train, the actual journey to Nakhon Sawan is certainly longer, as only the direct route (as the crow flies) between Pathum Thani and Nakhon Sawan has been calculated here.
Air line (approximately)
193 kilometers
104 nautical miles