The calculated distance (air line) between Kamalasai and Sakon Nakhon is approximately 68 miles respectively 110 kilometers.
By car or train, the actual journey to Sakon Nakhon is certainly longer, as only the direct route (as the crow flies) between Kamalasai and Sakon Nakhon has been calculated here.
Air line (approximately)
110 kilometers
59 nautical miles