The calculated distance (air line) between Stung Treng and Phibun Mangsahan is approximately 129 miles respectively 207 kilometers.
By car or train, the actual journey to Phibun Mangsahan is certainly longer, as only the direct route (as the crow flies) between Stung Treng and Phibun Mangsahan has been calculated here.
Air line (approximately)
207 kilometers
112 nautical miles