The calculated distance (air line) between Amphoe Sikhiu and Nakhon Sawan is approximately 119 miles respectively 191 kilometers.
By car or train, the actual journey to Nakhon Sawan is certainly longer, as only the direct route (as the crow flies) between Amphoe Sikhiu and Nakhon Sawan has been calculated here.
Air line (approximately)
191 kilometers
103 nautical miles