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Become a Member

Become a Member

One Tam Membership

As a One Tam member, you will be supporting the projects and programs that protect wildlife and their habitats, preserve historic trail corridors, and prepare young people to be stewards of the environment and leaders in their communities. Read more about our membership tiers and benefits below. 

Do you have a Mt. Tamalpais and outdoor enthusiast in your life? Consider gifting a One Tam membership - available at all membership levels. You'll be supporting conservation and community programs on Mt. Tamalpais and your gift recipient will have access to One Tam member benefits. Contact Sarah Lincoln, Associate Director, Individual Giving at to learn more.  

One Tam is an initiative of the Golden Gate National Parks Conservancy, a 501(c)(3) nonprofit organization, EIN #94-2781708.

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All One Tam members, $40 and up, receive the following basic benefits:

  • One Tam trail map

  • Access to member hikes or webinars

  • Members-only updates and e-newsletter



All the benefits listed above plus:

  • One Tam edition of Barry Spitz's definitive guide to Mt. Tamalpais Trails



All the benefits listed above plus:

  • Mt. Tamalpais Tote bag featuring art work by renowned Bay Area artist, Michael Schwab  



All the benefits listed above plus:

  • Recognition in the Golden Gate National Parks Conservancy annual report


$1,000 or more

All the benefits listed above plus membership in the prestigious One Tam Circle member and access to additional special experiences.  Learn More