The calculated distance (air line) between Bordeaux and La Roche-sur-Yon is approximately 133 miles respectively 214 kilometers.
By car or train, the actual journey to La Roche-sur-Yon is certainly longer, as only the direct route (as the crow flies) between Bordeaux and La Roche-sur-Yon has been calculated here.
Air line (approximately)
214 kilometers
115 nautical miles