All Locations > California > San Francisco B… > S Bay Area > Castle Rock & S… > Summit Rock Area

Outrigger Boulders Rock Climbing

Climbing Area Map

Routes in Outrigger Boulders

L › R R › L A › Z

	Donuts with Buddha S 5.10a 6a 18 VI+ 18 E1 5a
	Shaolin Slab S 5.11a/b 6c 23 VIII- 23 E3 5c

Order Wrong? Sort Routes

Explore this area in 3D

Use onX Backcountry to explore the terrain in 3D, view recent satellite imagery, and more. Now available in onX Backcountry Mobile apps! For more information see this post.

Elevation:	2,894 ft	882 m
GPS:	37.2413, -122.09867 Google Map · Climbing Area Map
Page Views:	64 total · 10/month
Shared By:	Matthew McCloskey on Sep 1, 2025
Admins:	Aron Quiter, Mike Morley, Adam Stackhouse, Salamanizer Ski, Justin Johnsen, Vicki Schwantes Page Updates (admin only)

See Weather Forecast

Access Issue: Seasonal Closure for Peregrine Falcon Nesting Details

Open on weekends and holidays from Sep 1 to Jan 31. Open from 8am to Sunset.

Nov 2015: "The land managers have asked that we stay off the climbs that go through the nest of the peregrine falcons - we have put tags on the anchors and the first bolts of the climbs. The climbs that are effected are:   
Rectalphobiac  
Glob of Shit  
Double Cracks   

As of Oct 4, 2014, Summit Rock at Sanborn County Park is open seasonally to climbing on Fridays, Saturdays and Sundays. Around January 2015, if nesting activity is observed by park rangers, climbing may be closed or limited to permits again. The free permit system limits access to 35 people a day, subject to the results of an ongoing peregrine/climber monitoring program. Climbers can call the Parks Department reservation line at 408-355-2201, give their contact information, and receive the free permit immediately by email. Please remember to close all gates and observe all posted signs.

Access Issue: Trails are closed from sunset to 6:00 am. Details

Trails close at sunset. Give yourself enough time to be back at your vehicle (or campsite if you're staying at one) before dark, or the rangers will fine you.

Always visit the Castle Rock State Park website parks.ca.gov/?page_id=538 for fairly current official information.