This is an exaggeration. SF as an example says you can be without your mask if you are:

> • Sitting or standing outside alone or with people you live with (such as picnicking outside) and you are more than 6 feet from others; • When eating or drinking alone or with people you live with, and nobody else is within 6 feet; • Exercising outdoors alone or with people who live with you (walking, hiking, bicycling, or running) and no one else is within 6 feet

Realistically though, there is no enforcement anywhere outside. If you want to go walking or running around outside on the sidewalk without a mask, nobody is going to stop you. You might get a funny look. If you crowd someone's personal space without a mask they might be uncomfortable.

Please wear your mask if you plan to spend extended stretches of time near other people.

Alameda County (adjacent to San Francisco) says: “people must, unless an exception applies, wear a Face Covering when outside and when anyone else other than just members of their Social Bubble (as defined in Paragraph 7 of Health Officer Order No. 20-14) is within 30 feet (10 yards).”

There is no such requirement.

In Alameda County the face covering order reads: “ people must, unless an exception applies, wear a Face Covering when outside and when anyone else other than just members of their Social Bubble (as defined in Paragraph 7 of Health Officer Order No. 20-14) is within 30 feet (10 yards).”

Sounds miserable.