Lyell-Maclure Col
Peak · 12,434 ft · Yosemite corridor
Lyell-Maclure Col is a 12,434-foot saddle on the Yosemite corridor's eastern Sierra crest, perched between two glaciated peaks. Wind and exposure dominate the alpine terrain.
The col funnels wind off the eastern slope; afternoon gusts push regularly into the 20s and 30s. Morning calm lasts until mid-day. Exposure is total; no shelter once you leave the approach gullies. Snow persists into early summer and undercuts stability on the west face.
The 30-day average wind of 12 mph masks frequent afternoon surges to 30-40 mph; temperature averages 22 degrees Fahrenheit, with maxima below freezing most days. The week ahead will follow the typical late-spring pattern: stable mornings, building afternoon wind, and lingering snowpack on the col itself. Watch for wind loading on the west slope and unstable corn cycles as sun exposure increases.
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About Lyell-Maclure Col
Lyell-Maclure Col sits on the main crest between Mount Lyell and Mount Maclure, two of the Sierra's highest peaks. Access from Yosemite Valley requires Highway 120 to Tioga Pass, then backpacking via the Lyell Fork drainage or the High Sierra Camps loop; total approach is 20-30 miles depending on trailhead. The col itself marks the intersection of major backcountry routes and is a critical waypoint for traverses of the high country. Elevation and alpine exposure mean this is a destination for experienced mountaineers and high-elevation hikers only.
Conditions at the col follow a strict diurnal rhythm driven by thermal circulation and pressure gradients off the Sierra crest. The 30-day average wind of 12 mph is understated; the typical afternoon pattern sees sustained 20-30 mph with gusts to 40 mph, especially on clear days when heating accelerates descent of cold air from higher peaks. Temperature averages 22 degrees Fahrenheit over the last month, with overnight lows regularly in single digits and daytime maxima struggling above 30 degrees. Crowding is minimal (3.0 average); the high entry barrier and technical approach keep visitor density low year-round. Late spring and early fall see the most stable weather, though snow and avalanche danger persist through June.
Lyell-Maclure Col suits mountaineers, alpine traversers, and ski mountaineers planning high-Sierra crossings. Weekend warriors should plan for mid-week visits to avoid the scattered traffic from Tuolumne Meadows and the High Sierra Camps. Expect to encounter snow on the col approach and saddle itself through early summer; consolidation cycles drive avalanche cycles on steep aspects, particularly the western slope above the Lyell Glacier. Park at Tioga Lake or Tenaya Lake depending on approach direction; Highway 120 access is the standard entry. Bring crampons, ice axe, and avalanche rescue gear in spring; the terrain is glaciated and the col sits in the SAC avalanche center zone.
Nearby peaks Mount Lyell (13,114 ft) and Mount Maclure (12,960 ft) are often climbed from the col in a linked traverse. The Lyell Fork drainage feeds into the larger Tuolumne River system and offers lower-elevation camps with more stable weather. Cathedral Range peaks to the west and Mono Divide peaks to the east provide alternative high-country routes. Compared to the more heavily trafficked passes of the Cathedral Range, Lyell-Maclure Col remains quieter and more exposed; wind and isolation are the defining challenges rather than crowds.