The calculated distance (air line) between Suwannaphum and Ubon Ratchathani is approximately 74 miles respectively 119 kilometers.
By car or train, the actual journey to Ubon Ratchathani is certainly longer, as only the direct route (as the crow flies) between Suwannaphum and Ubon Ratchathani has been calculated here.
Air line (approximately)
119 kilometers
64 nautical miles