Bay Day 2023 – Registration is Open!  

September 8 – October 7, 2023 

Save The Bay invites you to celebrate your love of the San Francisco Bay with our annual Bay Day Challenge – presented in partnership with San Francisco Bay Trail.  

Connect with your community, explore with friends and family, and rediscover the beauty of the Bay Area with the 30-day Bay Day Challenge. Choose how you celebrate: Tackle the 30 Mile Trail Challenge and hike, bike, swim, or walk the San Francisco Bay Trail or take on the Bay Activity Challenge and choose 10 fun Bay-related activities to complete.  

Last year, over 1,200 Bay Day participants collectively traveled around 17,400 miles of the Bay Trail and completed 1,240 activities. Registration for this year is now open. Sign up and be a part of the fun! 

To register, go to and fill out the sign-up form. Here, you can choose which challenge you want to tackle and decide to either join a team or create one yourself.  

We can’t wait to see all that we accomplish with this year’s Bay Day celebration!