The calculated distance (air line) between Biarritz and Saint-Vincent-de-Tyrosse is approximately 18 miles respectively 29 kilometers.
By car or train, the actual journey to Saint-Vincent-de-Tyrosse is certainly longer, as only the direct route (as the crow flies) between Biarritz and Saint-Vincent-de-Tyrosse has been calculated here.
Air line (approximately)
29 kilometers
15 nautical miles