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