The calculated distance (air line) between Ōdachō-ōda and Ōita is approximately 145 miles respectively 233 kilometers.
By car or train, the actual journey to Ōita is certainly longer, as only the direct route (as the crow flies) between Ōdachō-ōda and Ōita has been calculated here.
Air line (approximately)
233 kilometers
126 nautical miles