Biarritz is very close to Bayonne (10-15 minutes by bus). The city is located on the Atlantic coast and people loves walking there along the beach and inside the city. Here is an interesting website about Biarritz where you may find more detailed information.
Bayonne is a city in South-western France at the confluence of the Nive and Adour rivers, in the Pyrénées-Atlantiques department. The city is very close to the Atlantic Ocean. It belongs to both vernacular cultural regions of Basque Country and Gascony. Together with nearby Anglet, Biarritz, Saint-Jean-de-Luz and several smaller communes, Bayonne forms an urban area with almost 50.000 inhabitants.