The calculated distance (air line) between Huai Mek and Sakon Nakhon is approximately 72 miles respectively 116 kilometers.
By car or train, the actual journey to Sakon Nakhon is certainly longer, as only the direct route (as the crow flies) between Huai Mek and Sakon Nakhon has been calculated here.
Air line (approximately)
116 kilometers
63 nautical miles