Outdoors Unlimited
- University of California at San Francisco's club participates in backpacking, kayaking, skiing, and rafting, in addition to working on first aid, and teambuilding. Organization rents equipment and is open to the public. (San Francisco)
- http://www.outdoors.ucsf.edu/

Confused Outdoor Club
- Activities include biking, kayaking, climbing, and hiking. Offers mailing list, trip reports, and photos. (San Francisco Bay area)
- http://www.confused.org

Bonita Valley Trails
- Non-profit organization to protect and improve hiking and riding trails in Bonita. Includes trail maps, events calendar, and volunteer information.
- http://bonitatrails.org/

Redwood Outdoor Club
- Group rents out climbing and backpacking gear and has weekly meetings and quarterly trips. Membership restricted to Stanford students, faculty, and staff. (Stanford University, Palo Alto)
- http://www.stanford.edu/group/redwood/

California Great Outdoors
- Organized for the gay and lesbian community, activities include camping, hiking, rafting, skiing, kayaking, sailing and social events. Includes events calendar and list of local chapters. (southern California)
- http://www.greatoutdoors.org/