Las Trampas Wilderness Regional Preserve

There are 5,342 acres with many interconnected trails, some with steep elevation changes and some more flat areas.  The trails are shared by hikers, mountain bikers and horseback riders. The most common vegetation is black sage, chamise and buck brush and trees are coast live oak and bay laurel. Animals that find their home in this area are raccoons, foxes, opossums, bobcats, skunks and squirrels.  There are also cattle grazing in different areas to prevent forest fires.  You may see different species of hawks.


There is no water available so bring your own. Dogs must be on leash at all times.

Operating Hours

8 AM to sunset

Disabled Access

There is disabled parking, a wheelchair accessible chemical toilet and picnic site at the Bollinger staging area.


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18012 Bollinger Canyon Road

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From I-580 in Castro Valley, take Crow Canyon Road north to Bollinger Canyon Road. Turn left (north) onto Bollinger Canyon Road and follow it into the park. From I-680 in San Ramon, take Crow Canyon Road west to Bollinger Canyon Road, turn right (north) and follow it into the park.

Contact Info

(510) 544-3276