The calculated distance (air line) between Yasothon and Ubon Ratchathani is approximately 61 miles respectively 97 kilometers.
By car or train, the actual journey to Ubon Ratchathani is certainly longer, as only the direct route (as the crow flies) between Yasothon and Ubon Ratchathani has been calculated here.
Air line (approximately)
97 kilometers
53 nautical miles