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San Guillermo Mountain


Location: Ventura County, about 13 miles southwest of Frazier Park, 85 miles from Los Angeles


Auto Club: Ventura County, Los Angeles and Vicinity
Forest Service: Los Padres National Forest: Mt Pinos, Ojai and Santa Barbara Ranger Districts
USGS Topo: San Guillermo Mountain 7½
HPS: Route(s), waypoints and explanation of usage

Nearby Peaks: Lockwood Peak, Thorn Point (LO), San Rafael Peak

Printable version of this route


(USFS Adventure Pass required)
Distance: 2 miles round trip cross-country
Gain: 800'
Time: 1 1/2-2 hours round trip
Rating: Class 1, easy
Navigation: Moderate

Original: Paul A. Lipsohn, July 1974


  • Take I-5 north past Gorman to the Frazier Park turnoff.
  • Go west on Frazier Park Mountain Road for 7 miles to the junction with the Lockwood Valley Road in Lake of the Woods. Turn left.
  • Go 10.5 miles on the Lockwood Valley Road to the Mutau Road (7N03) on the left with a sign "Pine Springs CG". Turn left. Note your odometer and go as follows:
  • At 2.1 miles, Piano Box Road on the left. This is the turnoff for Lockwood Peak. Keep straight.
  • At 2.6 miles, fork on the left. This is an alternate turnoff for Lockwood Peak. Keep straight.
  • At 2.7 miles, fork with 7N03A on the right. Turn right (west).
  • At 3.7 miles, Pine Springs Campground. Drive all the way in. As you come back out, park at one of the upper campsites. There is a limit of two cars per campsite.


  • From the parking area (5800'), hike southwest down into a large wash adjacent to the campground.
  • Turn right and hike generally northwest up the wash. At the first major fork in the wash, go left (may be ducked), and continue up this fork to where it widens out and a bank appears on the left. A cattle trail crosses the wash here. (It may be ducked.)
  • Go left (southwest) and climb up to the top of a ridge. A summit is now visible to the northwest. This is not the main summit but is the end of a ridge leading to the summit.
  • Turn right and follow this ridge to its high point (6450'+).
  • Then go north down about 100' to a saddle and then up to the summit. The register is at this south summit (6602'), not at BM 6569' on the north peak. Make a careful note of the landmarks along the route. It is easy to get started in the wrong direction and the campground is not easy to spot on the way out.


The dirt roads are seasonal. The peak is in the Sespe Wilderness. No permit is required at this time.

History of Summit Signature

Climbing Archives

Please report any corrections or changes to the Mountain Records Chair.

Hundred Peaks Section, Angeles Chapter, Sierra Club
Published 27-December-2005
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