The calculated distance (air line) between Wang Saphung and Sakon Nakhon is approximately 157 miles respectively 253 kilometers.
By car or train, the actual journey to Sakon Nakhon is certainly longer, as only the direct route (as the crow flies) between Wang Saphung and Sakon Nakhon has been calculated here.
Air line (approximately)
253 kilometers
137 nautical miles