Pickleball | Mon,Thu | all | 9:00 AM | 11:00 AM | dropin | The Pickleball group plays on Monday and Thursday mornings at 9 a.m. We play "drop-in" pickleball, meaning you don't need to bring a partner. Just show up and you'll be playing in no time — there are usually people at all levels, so there's lots of variety in the matches. Golf - 9 holes | Tue | all | 9:00 AM | | dropin | Casual 9-hole golf on Tuesday mornings. No sign-up — just come out and play. Genealogy Group | Wed | 2 | 3:00 PM | 4:00 PM | dropin | The Genealogy Group meets on the 2nd Wednesday of the month, 3:00–4:00 p.m., via Zoom. A friendly monthly gathering of SIR members who share a fascination with family history — research methods, family-tree software, and sources for tracking down our ancestors. All SIR members welcome — no sign-up required; watch your email for the Zoom link. Tech Club | Tue | 4 | 10:30 AM | 12:00 PM | dropin | The Technology Club meets on the 4th Tuesday of the month at 10:30 a.m. Bring your questions about phones, computers, and apps. Stock Study Group | Mon | 2 | 10:00 AM | 12:00 PM | dropin | The Stock Study Group meets on the 2nd Monday of the month at 10:00 a.m. at the San Mateo Senior Center, for about two hours. A monthly gathering of SIR members who want to understand the stock market better — through open discussion and active participation, not lectures. All members welcome; no sign-up or experience required. For education and discussion only — not investment advice or a recommendation to buy or sell. Golf - 18 holes | Wed | not 2 | 10:00 AM | | register | https://sirsanmateo.wildapricot.org/event-6766348 Golf - 18 holes | Thu | 2 | 10:00 AM | | register | https://sirsanmateo.wildapricot.org/event-6766348 Bowling | Thu,Fri | all | 10:00 AM | | dropin | Drop-in bowling on Thursday and Friday mornings at 10 AM. Beginners and seasoned bowlers alike. Cards - Cribbage | Thu | all | 1:00 PM | 3:00 PM | dropin | Cribbage on Thursday afternoons. New players welcome — we'll teach you. Bocce | Fri | all | 10:00 AM | | dropin | Drop-in bocce on Friday mornings. No experience needed — equipment provided. Cards - Hearts | Fri | all | 12:30 PM | 2:30 PM | dropin | Hearts on Friday afternoons. A friendly, social game — all are welcome. Book Club | Fri | 2 4 | 1:00 PM | 2:30 PM | dropin | The book group meets every two weeks on Friday 1:00-2:30pm. We alternate between a discussion of the book selected by a member, which all members read, and an open discussion of book-related and other topics of interest to the group’s members. Monthly Luncheon | 2026-08-12 | 11:30 AM | | register | https://sirsanmateo.com/event-6785282 Pickleball Clinic | 2026-08-24 | 11:15 AM | 1:00 PM | register | https://sirsanmateo.wildapricot.org/event-6757893 Pickleball Clinic | 2026-09-28 | 11:15 AM | 1:00 PM | register | https://sirsanmateo.wildapricot.org/event-6757893 Pickleball Clinic | 2026-10-26 | 11:15 AM | 1:00 PM | register | https://sirsanmateo.wildapricot.org/event-6757893 Pickleball Clinic | 2026-11-23 | 11:15 AM | 1:00 PM | register | https://sirsanmateo.wildapricot.org/event-6757893 Pickleball Clinic | 2026-12-28 | 11:15 AM | 1:00 PM | register | https://sirsanmateo.wildapricot.org/event-6757893