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Become a Member

Become a Member

One Tam Membership

Become a One Tam member and support our work that protects wildlife and their habitats, preserves historic trail corridors, and prepares 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 or outdoor enthusiast in your life? One Tam membership at any level makes a great gift. You'll be supporting conservation and community programs on Mt. Tamalpais and the 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.

Join Today!

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 commemorative pin


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  

  • 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.