The latest Sunday Streets is this Sunday - Great Highway/Sunset district. You'll have access to more than 3 miles of Golden Gate Park and the Great Highway, from 11:00-4. Combine this with Golden Gate Park’s weekly car-free Sundays on JFK from Stanyan to Park Presidio, and that makes Golden Gate Park completely free of car traffic for one day of the year. Also this weekend is the Haight Street Fair, so don't miss that. Bring your feet or your non-motorized wheels to enjoy the day.
You can find Sunday Street details here.