Friends of Mt Tam formerly the Mt. Tamalpais Interpretive Association is the non profit organization who partner with the park and whose purpose is to promote the conservation, education, and interpretation at Mount Tamalpais State Park. Be a part of Friends of Mt Tam to help ensure funding for projects and programs within Mount Tamalpais .With its golden grasslands, iconic oak woodlands, stands of redwood forest, chaparral, and views of the Golden Gate Bridge, Mount Tamalpais State Park captures the heart of Marin County. While fog is a defining aspect of the ecosystem, on clearer days hikers can see the Farallon Islands, the San Francisco bay, the cities of the East Bay, and even as far as Mount Diablo. More than miles of .Loop Hikes on Mt Tam While you are welcome to join any of Friends of Mt Tam guided hikes , you may wish to hike on your own. There are several hundred miles of trails in the State Park and adjacent areas such as the Marin Municipal Water District for you to explore..Mount Tamalpais, considered by many to be the birthplace of mountain biking, boasts a long and colorful fat tire history. In the mid s such now venerable names as Joe Breeze and Gary Fisher were pushing the limits of their specially rigged bikes down trails such as the infamous Repack technically a bit north of Mount Tam ..