https://www.mercurynews.com/2021/05/03/heres-how-californias-new-mask-guidelines-differ-from-the-cdcs/

Let’s say you’re walking down a busy street, or hiking on a popular trail, and see people coming the other way. The path you’re sharing is narrow and you’ll have to pass less than six feet from the other group.

According to the state of California, if you aren’t fully vaccinated, you do.