Home / California / Big Bear & the Rim of the World / San Gorgonio Mountain
The bare rock summit of San Gorgonio Mountain above the tree line, a hiker resting among the stones, San Jacinto Peak across the pass beyond.Chelsea.brisson.423 / CC BY-SA 4.0 via Wikimedia Commons
🌲Natural

San Gorgonio Mountain

Part ofBig Bear & the Rim of the World

The highest ground in Southern California, and the only summit down here that stands clear above the trees.

Duration
A long full day, twelve hours or more.
📅
Best Season
June to October. Snow and ice hold on the upper mountain well into spring.

The Story

At 11,503 feet San Gorgonio is the high point of Southern California and of the Transverse Ranges, and it is the only mountain in the southern half of the state whose summit rises well above the tree line. That is why its snow reads from far out on the valley floor, and why the bare grey rock of it is recognisable at distance. People here called it Old Grayback long before the survey put the Spanish name on the 1899 topographic sheet; Spanish missionaries had named it for Saint Gorgonius in the early seventeenth century.

It is sacred ground. The Cahuilla know the mountain as Kwiria-Kaich, bald or smooth, and count it among the sacred peaks of this region. Other nations of Southern California hold it sacred under their own names, and the range around it is Maara'yam country.

Its numbers are unusual. The peak stands more than eight thousand feet above the ground that connects it to anything higher, which makes it the seventh most topographically prominent summit in the lower forty-eight. It also holds the longest confirmed line of sight in the contiguous United States: the summit can be seen from the top of Mount Whitney, a hundred and ninety miles away.

The first recorded ascent was in 1872, by W. A. Goodyear of the California Geological Survey with Mark Thomas of San Bernardino, coming up the Mill Creek side. Their line is roughly today's Vivian Creek trail, still the shortest way to the top and still something over five thousand feet of climbing. It is a long day by any route.

Protection came early and in pieces. A recreation area closed to road building in 1929, more ground added in 1931, and eventually the San Gorgonio Wilderness under the Wilderness Act of 1964, now within the Sand to Snow National Monument. Permits are required and quotas apply, so arrange that before you come.

Visitor Info

Time Needed
A long full day, twelve hours or more.
📅
Best Season
June to October. Snow and ice hold on the upper mountain well into spring.
🛣️
Highway
SR-38

On the Map

Nearby

The closest stops worth working into your route

geological8.8 mi away
Onyx Summit
The highest pass any state highway crosses in Southern California, at the top of the long way into Big Bear.
cultural12 mi away
Big Bear Solar Observatory
A reservoir dug for orange groves turned out to be one of the steadiest places on the continent to look at the sun.
natural13 mi away
Baldwin Lake Ecological Reserve
Pebble plains occur in this valley and nowhere else on earth, and the flowers on them are small enough that you have to lie down.
industrial13 mi away
Bear Valley Dam
Big Bear Lake is an irrigation reservoir first, and in 1977 the town had to buy the dam to keep water in its own view.
historical14 mi away
Doble
Three men with money reopened this mine and all three failed. The town is named after the second one.
historical14 mi away
Keller Peak Fire Lookout
For ninety-eight years it watched this forest for smoke. In September 2024 a fire took it, and the steel frame is what is left.

Historical markers nearby

Roadside plaques and monuments within a short detour

Marker12 mi away
Holcomb Valley
Big Bear City
Marker13 mi away
Old Bear Valley Dam
Big Bear Lake
Marker15 mi away
Saahatpa
Beaumont
Marker17 mi away
Yucaipa Adobe
Yucaipa
Marker17 mi away
Yucaipa Rancheria
Yucaipa
Marker20 mi away
The Zanja
Redlands