I support many outdoor related organizations, but three at the top of the list are:
http://www.supportparks.org/
San Mateo County Parks Foundation – SMCPF drives programs & fundraising for San Mateo County’s world class parks that span the SF Peninsula, the Santa Cruz Mountains, and the Pacific Ocean. I am a board member and a long time volunteer with the parks.
www.trailcenter.org
The Trail Center is a Palo Alto based all volunteer organization that builds and maintains hiking trails in the Bay Area & CA. I am a crew leader, board member, and a TC member since the mid 90s.
www.thenorthface.com
The North Face (TNF) builds the best gear for the outdoors, supports the preservation of wild places, and inspires a global movement of outdoor exploration. I am a TNFLocals Ambassador who supports the TNF mission.