There are many custodians of land in the Greater Bay Area, all with amazing land at our disposal. To help you find hiking near you I have listed the key players, and linked to their home page.
East Bay
- East Bay Regional Parks
http://www.ebparks.org/
Tri-Valley
- Livermore Area Recreation & Park District
http://www.larpd.org/ - East Bay Regional Parks
http://www.ebparks.org/
South Bay
- Santa Clara County Parks
https://www.sccgov.org/…/Welcome-to-Santa-Clara-County-Parks.aspx
Santa Cruz Mountains
- Midpeninsula Regional Open Space District
https://www.openspace.org/
Peninsula
- Midpeninsula Regional Open Space District
https://www.openspace.org/ - County Of San Mateo: Parks Department
https://parks.smcgov.org/county-parks
Marin/Delta/North Bay
- East Bay Regional Parks
http://www.ebparks.org/ - California State Parks
https://www.parks.ca.gov/ - National Parks Service
https://www.nps.gov/state/ca/index.htm
Wine Country
- California State Parks
https://www.parks.ca.gov/