Mountain biking on Mount Tamalpais

Tam) and the surrounding areas in Marin County, California are recognized as the birthplace of the modern mountain biking industry.

In the 1970s, mountain biking pioneers such as Gary Fisher, Otis Guy, Charlie Kelly and Joe Breeze were active.

The 2006 film Klunkers chronicled their story, solidifying Mount Tamalpais' status as a mountain biking destination, as did Frank J. Berto's book The Birth of Dirt.

[1][2] The area is used by mountain bikers due to Mount Tamalpais’ proximity to a highly populated geographic region, ease of access, varied terrain, and views.

A number of trailheads surround the mountain, and the paved and dirt fire roads that cross Mount Tamalpais and adjacent foothills provide options for people of all fitness levels.