Drove from Biscarrosse. Was a few hours drive but we were staying in south-west France anyway and had planned 2 days away. Drove in the morning, got there by midday, had lots of pintxos and beers for lunch, walked round the beach and walked up some route so you can get aerial views of the city (Can see Sociedad's ground). Then went out in the evening. Such a lovely place. The Airbnb we stayed in was so good as well, only cost about 100 euros a night, but split between 5 of us was so cheap.
I'd definitely go again for much longer though.