Chess and Mahjong

Fri · Oct 30·5 AM·Event Location, San Francisco

Cycle track open before 2:00 PM at Event Location, San Francisco.

Fri · Oct 30·8:30 AM – 4:30 PM·San Francisco, CA (Farallon Islands)

Eight‑hour naturalist‑led whale watching expedition sails from San Francisco under the Golden Gate Bridge to the Farallon Islands, featuring an expert naturalist, $320 per person, ages 13+.

Fri · Oct 30·9 AM – 12 PM·Presidio Trust · San Francisco

Volunteer with Presidio Forest Stewards at the Presidio Trust.

Fri · Oct 30·10 AM – 11:30 AM·Children’s Council of San Francisco, 445 Church Street, San Francisco, CA

Free playgroup sessions at Children’s Council of San Francisco offer developmentally engaging, hands‑on activities led by a coach, with screening, feedback and education for ages 0–3.

Tue · Oct 27·5:30 PM·United Nations Plaza, 50 United Nations Plaza, San Francisco

Free dance fitness class by Rae Studios takes place at United Nations Plaza.

Tue · Oct 27·6:45 PM·Event Location, San Francisco

Cycle track open after 6:45 PM at Event Location, San Francisco.

Wed · Oct 28·4 PM·Golden Gate Bandshell, Music Concourse Drive, San Francisco

Midweek Melodies performs at the Golden Gate Bandshell in San Francisco.

Fri · Oct 30·12 PM·Sigmund Stern Grove, 19th Avenue and Sloat Boulevard, San Francisco

Mobile Rec presents a rock climbing wall at Scaregrove in Sigmund Stern Grove.