What is SIR?
SIR San Mateo Branch 1 is one of 70+ branches with one simple mission: helping retired and semi-retired men make new friends and enjoy retirement. We focus on fun and camaraderie—not politics, religion, or fundraising. Our 120+ members have no secret handshakes…and we don’t wear funny hats.

Serious fun!
Fill your calendar with golf, pickleball, tennis, bowling, hiking, travel, wine tasting, technology, genealogy, cards, investments, and more. Every activity is open to every member—and it’s a great way to make new friends.

Cost
Annual dues are just $40. Most activities are free. Golf and our monthly luncheons are pay-as-you-go.

Try SIR free!

Take SIR on a free test drive. Click Here to send us your contact info, and we’ll invite you to some upcoming events.