Start your journey early to reach San Sebastian before lunchtime. San Sebastian is known for its beaches and mouth-watering restaurants. Take a stroll along the Concha Bay while you explore the city's rich history. Lunch at any of the seafood restaurants to get a taste of some excellent seafood from the Bay of Biscay.
Head to Bilbao to marvel at the Guggenheim Museum and its modern art installations. Take a walk along the city's Old Quarter and check out the Cathedral de Santiago. Finish your day by tasting some pintxos, a popular Basque snack.
Logroño, located on the Ebro River, is renowned for its food and wine scene. Try visiting the Calle del Laurel and participate in the region's popular tapas crawl. You can also stop by the Concatedral de Santa María de La Redonda and the Paseo del Espolón for a scenic walk.
Biarritz, being a popular resort town in France, has excellent beaches that are perfect for surfing, swimming, and sunbathing. The town is also known for its glamourous casinos and golf courses. Admire the Biarritz Lighthouse and enjoy some tasty crepes or French baked goods.
Spend the morning at the beach or shopping for souvenirs before starting your journey to Barcelona. You could stop at any of the fantastic towns that you came across during your journey. Arrive back in Barcelona before dinner time to fly back home.
If you have more time, explore more of the Basque Country, including its charming towns, such as Hondarribia and San Juan de Gaztelugatxe. If you have less time on your hands, consider skipping Biarritz, or cutting short your time in San Sebastian or Bilbao to suit your preferences.