Your Bay Day Challenge

Your Bay Day Challenge

Get excited and get outside, because the Bay Day Challenge has officially begun!

Take on the 30 Mile Challenge or complete 10 Bay-related Activities. Run, bike, swim, walk, kayak, picnic, bird watch – on your own or with a team – there are so many ways to explore and celebrate Bay Day your way.

Challenge Guide

This year, we’ve made it easy for you to personalize your Bay Day. Our Challenge Guide includes a list of activities, trails, events, and much more. It is sorted by region and category, so that you can easily find Bay Day activities to suit you and your people. Our Bartable section even allows you to easily find public transportation to your Bay Day adventures. Whether you are an experienced biker or an art fanatic, this Challenge Guide is a great way to find and plan your Bay Day to connect with your community and your region.

Bay Day Celebration

Where: Martin Luther King Jr. Shoreline, Oakland When: October 7, 10 am – 3 pm

Save The Bay is hosting a special Bay Day Celebration to commemorate the month long event, and we hope you can make it! There will be a number of fun and impactful activities for all ages, including bird walks, shoreline cleanups, and native plant nursery programs. The first 100 attendees will also get commemorative Bay Day t-shirts and bags from our friends at Stasher. Register in advance and secure your spot to celebrate Bay Day with us!

30 Days of Prizes

Complete the Bay Day Challenge – 30 miles or 10 activities – and you will be entered to win our grand prize: San Francisco Bay Guided Kayak Tour with Sea Trek, for up to 12 people!

Two runners up will get $100 gift cards to Sports Basement, a local outdoor retailer. You can also share your adventures on Instagram and tag @saveSFbay #SFBayDay #BayDayChallenge for a weekly chance to win a $50 Sports Basement gift card.

Submit Your Results

Once you’ve hit a trail or completed an activity, head to the Bay Day RunSignUp portal and search for your name in Participant Lookup. Here you can submit your results to work towards winning the grand prize. If you have any questions, be sure to check out our FAQ.

Bay Day 2023 – Registration is Open!  

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!