The calculated distance (air line) between Kosum Phisai and Sakon Nakhon is approximately 95 miles respectively 153 kilometers.
By car or train, the actual journey to Sakon Nakhon is certainly longer, as only the direct route (as the crow flies) between Kosum Phisai and Sakon Nakhon has been calculated here.
Air line (approximately)
153 kilometers
83 nautical miles