Las Trampas Wilderness Regional Preserve

Las Trampas Wilderness Regional Preserve ahs more than 5,700 acres of wilderness and an expanded trail system that for hikers, bicycles and horseback riders. This park is home to the Las Trampas and Bollinger faults and their related geological formations including remnants of ancient shoreline, fossil-bearing rock layers, and a volcanic tuff. The main entrance is the Bollinger staging area that has a chemical toilet and picnic site. There is no water within the park.


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