The Sphinx
Peak · 9,140 ft · Eastern Sierra corridor
The Sphinx is a 9,140-foot peak in the Eastern Sierra's high country, sit near the crest between Bishop and the Sierra Nevada's backcountry. Exposed and wind-prone, it demands clear judgment on approach timing.
Wind accelerates upslope in the afternoon; morning calm typically holds until midday. The peak sits above 9,000 feet where temperature swings are sharp and snowpack lingers into early summer. Afternoon gusts funnel off the surrounding basins, making early starts essential.
Over the last 30 days, The Sphinx averaged a NoGo Score of 35 with an average wind of 7 mph, well below the 16 mph peaks that spike scores during afternoon wind events. Temperatures have averaged 46 degrees Fahrenheit at the peak. The week ahead will show whether calm mornings persist or afternoon wind patterns return to typical strength.
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About The Sphinx
The Sphinx sits on the Eastern Sierra crest at 9,140 feet, northeast of the Bishop area and within the Inyo National Forest. Access is via Highway 395 to the Bishop turnoff, then up the Bishop Pass Road (Highway 168) or via backcountry from the Sabrina Lake drainage. The peak's low base popularity reflects its position in true high-country terrain; no direct trailhead parking exists at the summit approach. Most climbers approach from the west via the South Fork Bishop Creek drainage or from the north off the Sierra crest trail system. Drive times from Bishop are 45 minutes to 90 minutes depending on trailhead choice.
The 30-day average temperature of 46 degrees Fahrenheit confirms The Sphinx remains in the snowmelt zone through spring; winter snowpack retreats upslope by late June. Wind averages 7 mph over the rolling month but peaks at 16 mph during afternoon thermals. The peak sits above treeline, exposed to the prevailing westerly and Sierra wave effects. Crowding averages 2 on a 10-point scale, typical for high-country passes far from roadhead parking. Early summer (late May through early July) brings the most stable weather windows, though afternoon wind is a consistent feature.
The Sphinx suits climbers and scramblers comfortable with scrambling Class 2 to Class 3 rock on exposed terrain. Experienced mountaineers use it as a training approach for higher peaks or as a day objective from Bishop or Sabrina Lake basecamp. Winter ascents require avalanche awareness; the south-facing slopes above 9,000 feet can slide after heavy snow or rapid warming. Spring visitors should expect a 2 to 3-week window where snowpack makes the approach hazardous; ice axe and crampons are standard through May. Afternoon wind is predictable enough that morning starts before 8 a.m. avoid the worst gusts.
Nearby alternatives within the Eastern Sierra corridor include North Palisade (14,242 ft) and the Palisade Glacier descent, Bishop Pass (11,972 ft) as a day hike alternative, and the broader Sierra crest traverse linking The Sphinx to neighboring peaks. Visitors combining The Sphinx with a Bishop Lake or Sabrina Lake camp gain flexibility on weather windows. The peak's low visibility compared to higher fourteeners means it sees steadier climbing pressure during stable weather windows; check the Bishop Pass road closure status before committing to a drive.