The calculated distance (air line) between Nong Khae and Phasi Charoen is approximately 52 miles respectively 84 kilometers.
By car or train, the actual journey to Phasi Charoen is certainly longer, as only the direct route (as the crow flies) between Nong Khae and Phasi Charoen has been calculated here.
Air line (approximately)
84 kilometers
45 nautical miles