RoutesPlaces to seeNorth AmericaUnited StatesCaliforniaContra Costa County
Diablo Foothills Regional Park
RoutesPlaces to seeNorth AmericaUnited StatesCaliforniaContra Costa County
Diablo Foothills Regional Park
The Top 13 Attractions in Diablo Foothills Regional Park
There are plenty of places to see and visit in Diablo Foothills Regional Park. Whether you love hiking or cycling, Diablo Foothills Regional Park is a region where 13
hidden gems are waiting to be explored and visited. Check the top places to visit in the region and plan your next adventure today.
hidden gems are waiting to be explored and visited. Check the top places to visit in the region and plan your next adventure today.
Last updated: November 24, 2025
Hanna Grove Trail
Highlight (Segment) • Trail
The gravel trail loops around the generous picnic area with tables, BBQ grill, water, and meal preparation facilities.
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Sandstone caves in Castle Rock formations
Highlight • Cave
Water, wind, and calcite erosion in per-volcanic sandstone formation.
Slightly acidic rainwater seeps into the sandstone during winter rains and dissolves some of the calcite. Warm and dry days cause …
Slightly acidic rainwater seeps into the sandstone during winter rains and dissolves some of the calcite. Warm and dry days cause …
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Foothills Trail and Borges Ranch Trail junction
Highlight • Trail
At this intersection you either decide to continue on Borges Ranch Trail or on Foothills Trail – both are great gravel roads.
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Castle Rock Recreation Area
Highlight • Climb
The Castle Rock formations are a popular destination for local rock climbers in this scenic canyon along Pine Creek, with Mammoth Rock the largest. The prominent sandstone amid the oak …
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Briones to Mount Diablo Regional Trail
Highlight (Segment) • Trail
Gravel at its best. This road is a paradise for gravel bikers and novices on a mountain bike.
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Still not found the Highlight you’re looking for? See guides of the top attractions in other regions:
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