Corridor Pass
Peak · 11,082 ft · Mammoth Lakes corridor
Corridor Pass rises to 11,082 feet in the Mammoth Lakes Sierra corridor, a high-elevation crossing exposed to afternoon wind and avalanche terrain. Winter access is limited; spring and early fall offer the narrowest window of stable conditions.
Wind accelerates through the pass in the afternoon, funneling off the high country to the east. Morning calm gives way to sustained gusts by mid-day. Temperature swings sharply with elevation and season. Snowpack persists into early summer; evaluate slope stability before crossing steep terrain.
Over the last 30 days, Corridor Pass averaged 14 mph wind with gusts to 43 mph and a mean temperature of 23 degrees F. The typical NoGo Score sits at 36, meaning conditions run marginal more often than not. The week ahead will track the seasonal pattern: cooler mornings with lighter wind, afternoon deterioration. Check current avalanche advisories before any winter or spring approach.
30 days back / 7 days forward
Today's score by factor
About Corridor Pass
Corridor Pass lies at the eastern edge of the Mammoth Lakes corridor in California's Sierra Nevada, roughly 11,000 feet above sea level. Access is indirect: most parties approach from the west via Highway 395 through Mammoth Lakes, then gain the high country on foot or ski. The pass itself sits between deeper winter snowpack and the rain-shadow desert to the east. Base popularity remains low because the approach is technical and weather-dependent. Winter closure is the norm; spring breakup and early fall are the only reliable windows. Summer access is straightforward but crowds thin rapidly above 10,000 feet.
Corridor Pass sits in the heart of Mammoth's weather factory. The 30-day average wind of 14 mph masks a violent afternoon pattern; peak gusts regularly exceed 40 mph. Mean temperature over the same window was 23 degrees F, a figure that reflects the late-winter and early-spring dominance in the rolling average. Over a full year, the pass sees lows of 8 degrees F and highs of 36 degrees F, a 28-degree swing that governs snowpack stability and hiking viability. Avalanche terrain is present; ESAC (Eastern Sierra Avalanche Center) advisories must be checked before any steep approach or descent. Crowding remains light year-round (average 2.0 on the congestion scale), a function of both remoteness and technical access.
Corridor Pass suits experienced mountaineers, backcountry skiers, and peak baggers comfortable with altitude, wind, and avalanche terrain. Most parties visit in the brief spring window when snow coverage allows ski access but consolidation has begun, or in late September through early October when snow has melted and temperatures moderate. Wind is the dominant constraint; calm mornings are mandatory for safe travel. Afternoon deterioration is so reliable that a summit push must begin at dawn and descend by early afternoon. Parking near the trailhead is limited; arrive early or plan a multi-day outing that justifies the drive.
The wider Mammoth corridor contains dozens of accessible peaks and passes at similar elevations. Minaret Vista, further south on Highway 203, offers comparable views with far shorter approach time. Mammoth Crest to the north and the eastern escarpment above Crowley Lake present steeper avalanche terrain and even stronger afternoon winds. First-timers to the 11,000-foot Sierra typically start with Mammoth Mountain proper or Reds Meadow approaches, which have established infrastructure. Corridor Pass is the play for those seeking isolation, technical problem-solving, and the reward of true high-Sierra solitude.