The calculated distance (air line) between Dioulabougou-Boléko and Vavoua is approximately 166 miles respectively 268 kilometers.
By car or train, the actual journey to Vavoua is certainly longer, as only the direct route (as the crow flies) between Dioulabougou-Boléko and Vavoua has been calculated here.
Air line (approximately)
268 kilometers
145 nautical miles