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Connect, Explore, and Discover the San Francisco Bay TrailSign Up
Take on the 25-Mile Challenge, and connect with the Bay whenever and however you choose. You will have a full month to explore the San Francisco Bay Trail, which spans 350 miles throughout all 9 Bay Area counties, and connects communities to parks, open spaces, and to each other. There are so many options!
Participate in FIVE activities of your choice-- on the trail, or even in your own neighborhood! For this highly flexible and customizable challenge, discover the Bay however you want and wherever you are. Whether it’s kite flying, bird-watching, picnicking, or connecting with local culture through history-filled audio tours, there are so many ways to explore.
Take the Bay Day Trail Challenge with friends, family, colleagues, or club members! You can create or join a team when you sign-up for the Challenge or after you've completed registration. Track your mileage and activities together and get the competition going!
If you're a Bay Day sponsor, your team has been pre-loaded for you and your employees. A password is required to join. Reach out to your internal lead for more informationTeam FAQ Team Lookup
Everyone who completes the Bay Day Trail Challenge will be entered to win a grand prize $300 gift certificate from our friends at REI and a 1 year membership to AllTrails Pro. 10 runners up will receive 1 year membership to AllTrails Pro and AllTrails swag to help guide their next trail adventure.