The calculated distance (air line) between Phanom Thuan and Phasi Charoen is approximately 57 miles respectively 92 kilometers.
By car or train, the actual journey to Phasi Charoen is certainly longer, as only the direct route (as the crow flies) between Phanom Thuan and Phasi Charoen has been calculated here.
Air line (approximately)
92 kilometers
50 nautical miles