The calculated distance (air line) between Ubon Ratchathani and Phibun Mangsahan is approximately 25 miles respectively 41 kilometers.
By car or train, the actual journey to Phibun Mangsahan is certainly longer, as only the direct route (as the crow flies) between Ubon Ratchathani and Phibun Mangsahan has been calculated here.
Air line (approximately)
41 kilometers
22 nautical miles