The calculated distance (air line) between That Phanom and Ban Nong Wua So is approximately 101 miles respectively 162 kilometers.
By car or train, the actual journey to Ban Nong Wua So is certainly longer, as only the direct route (as the crow flies) between That Phanom and Ban Nong Wua So has been calculated here.
Air line (approximately)
162 kilometers
87 nautical miles