The calculated distance (air line) between Phanom Sarakham and Phasi Charoen is approximately 61 miles respectively 99 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 Sarakham and Phasi Charoen has been calculated here.
Air line (approximately)
99 kilometers
53 nautical miles