The Place

Mount Diablo

Two major Bay Area faults, the Las Trampas and Bollinger faults, run through this park and account for the uplift of the steep ridges with deep canyons between. These tectonic forces have also caused the exposure of well-defined geological formations. One formation holds remnants of ancient beach and shoreline, another consists of several fossil-bearing compressed rock layers and another is of volcanic origin.

View of the Trail Along Ridge

Walking the Walk

We start out heading North on the Bollinger Creek Loop Trail, then ascend to the Las Trampas Ridge/Calaveras Ridge trail to Vail Peak. Turn left on Corduroy Hills Trail which takes us over Eagle Peak and down to Madrone Trail. We turn left and follow it up to our meeting spot on Las Trampas Peak. We return following the Las Trampas Ridge/Calaveras Ridge Trail to the Chamise Trail.

Level: 3.5 - Miles: 8.3 - Elevation change: 2000 ft - Host: Troy & Amy H.

View of Trail

Directions:

From San Jose: Take I-680 North and exit on Crow Canyon Road west in San Ramon. Turn Right on Bollinger Canyon Road and follow it 4.1 miles to the park entrance at the end of the road.

Travel time from San Jose: 1 hour

View of Ridge Across Ravine

Know Before You Go:

No Parking Fee
Dogs Allowed On Leash Rules
Dress appropriately, Layers are suggested
Restrooms - available in the Parking Lot

Website Trail Map: Click Here