This is the only place you can swim outdoors for free in SF. Each lap (out-and-back) is about a 1/3 of a mile.
Take an early morning swim and watch the sunrise over the east bay or catch an afternoon swim on a sunny SF day. A full lap around the buoys (out-and-back) is about 1/3 mile and the perimeter of the park is 1 mile. Bring your dog for a swim too! Afterward, you can head up Columbus to one of the many coffee shops in north beach to warm up, or even better, an irish coffee at the Buena Vista.
