The calculated distance (air line) between Soeng Sang and Nakhon Sawan is approximately 178 miles respectively 287 kilometers.
By car or train, the actual journey to Nakhon Sawan is certainly longer, as only the direct route (as the crow flies) between Soeng Sang and Nakhon Sawan has been calculated here.
Air line (approximately)
287 kilometers
155 nautical miles