Crissy Field has the views, beach, green fields, all in a nice package right in San Francisco.
Crissy Field is a convenient beach outing if you live in or are visiting San Francisco. Dogs can swim in the water or run off-leash on the open fields. The protected waters of the bay are a little safer for the dogs to swim in than the Ocean side and there is plenty to do in the area. You can enjoy the views of the Golden Gate Bridge and Alcatraz. For a touch of tourism, visit the nearby Fort Mason where dogs are allowed on leash. You can also extend your adventure by doing one of the Presidio hikes.