Castle Rock State Park
Saratoga / Los Gatos · near Saratoga / Los Gatos · SF Bay Area
Rock Climbing · parks
At a glance
- Skill level
- beginner
- Grade range
- 5.5 (Goat Rock routes) to 5.11+ (hard overhangs)
- Best season
- Year-round · Best spring and fall · Summer fog burns off by midday · Avoid after heavy rain (sandstone degrades when wet)
- Size
- 5242
- Established
- 1968
Permits and booking
- Permit
- State park day use fee ($10/vehicle). No climbing permit. Sandstone rules: do NOT climb within 24–48 hours of rain — sandstone is fragile when wet and routes can be permanently damaged.
Worth knowing
- Good for a first timer
- Yes
Rock Climbing detail
- Climb types
- trad · bouldering · top-rope
- Rock type
- Sandstone — weathered tafoni sandstone with unusual pockets and holes
- Route count
- 100+ routes and boulders throughout the park
- Signature routes
- Castle Rock Route (5.6) · Castle Rock Boulders · Goat Rock Area
- First timer note
- Castle Rock is the best introduction to outdoor climbing for Bay Area residents. Short approaches, accessible grades, beginner-friendly guide services, and the unique tafoni sandstone make for a memorable first outdoor experience.
- Intl tip
- Castle Rock sits in the Santa Cruz Mountains between Silicon Valley and the Pacific coast — you can combine a morning climbing session with an afternoon drive down Highway 9 to Santa Cruz, arriving at Steamer Lane for the surf and the Santa Cruz Surfing Museum. One of the most complete single-day Bay Area outdoor experiences.
parks detail
- Hook
- Sandstone climbing caves and the trailhead of the Skyline-to-the-Sea
- More
- The sandstone here weathers into the same tafoni caves as the coast, and generations of climbers learned to boulder on Castle and Goat Rocks. It's mile zero of the 30-mile Skyline-to-the-Sea Trail; the trail camp makes the classic first night.
The guide
The Santa Cruz Mountains rising above Silicon Valley hold Castle Rock State Park — and within it, the Bay Area's most accessibl…
In the Guidebook
Everything above is yours for free. The written guide to Castle Rock State Park — what it is actually like, and what we would tell a friend before they went — comes with the Guidebook.
Getting there
- Coordinates
- 37.2293, -122.089