Hopkins Pass
Peak · 11,440 ft · Mammoth Lakes corridor
Hopkins Pass sits at 11440 feet in the Mammoth Lakes corridor of California's Sierra Nevada. A windswept alpine saddle between high ridges, it marks the boundary between two major drainage basins and catches afternoon gusts funnelling down from the open ridge.
Wind dominates here. The 30-day average is 14 mph, but afternoon thermals and ridge exposure push gusts to 39 mph by mid-day. Morning calm lasts until mid-morning; skip the afternoon if you're sensitive to wind. Exposure on the pass itself is unforgiving.
Over the last 30 days, Hopkins Pass averaged a NoGo Score of 37.0 with temperatures around 23 degrees Fahrenheit and winds averaging 14 mph. The week ahead shows typical spring variability; expect wind to spike most afternoons and crowds to remain light (average 2.0). Plan for morning windows and monitor avalanche conditions above 11000 feet.
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About Hopkins Pass
Hopkins Pass is a high alpine saddle at 11440 feet in the Mammoth Lakes corridor, lying between the main Sierra crest and the Inyo Range. Access is typically from the east via Highway 395 near Mammoth Lakes; approach routes include backpacking from Mammoth Pass or the Mammoth Crest Trail system. The pass itself is a winter and spring destination; summer approaches are snowfree but exposed. Drive time from Mammoth Lakes town is 45 minutes to trailheads on the east side. The location sits on terrain managed by Inyo National Forest with avalanche hazard assessment from Eastern Sierra Avalanche Center.
Winter and spring conditions define Hopkins Pass. The 30-day rolling average temperature is 23 degrees Fahrenheit; 365-day extremes range from 9 degrees in deep winter to 36 degrees in late summer. Wind is the dominant factor. Average wind over 30 days is 14 mph, but maximum gusts reach 39 mph on exposed afternoons. Snowpack here is substantial from November through May; avalanche terrain is active and slopes above the saddle are prone to wind slab and wet-slab instability during warming cycles. Crowding is minimal; the 30-day average is 2.0, reflecting the pass's remote location and technical access requirements. Early morning departure cuts through the calm window; mid-afternoon is reliably windy and cold.
Hopkins Pass is best suited to experienced winter climbers, ski mountaineers, and backpackers comfortable with avalanche-terrain travel. The approach requires route-finding on snow and competence with map and compass; GPS alone is insufficient in whiteout conditions. Summer users are rare due to talus scree and lack of maintained trail. Expect to carry overnight gear; day-trip logistics from Mammoth Lakes require predawn starts and careful turnaround discipline. Avalanche assessment from Eastern Sierra Avalanche Center is essential; slopes adjoining the pass frequently slide after storms or during spring warming. Solo travel is not recommended.
Nearby alternatives in the Mammoth corridor include Mammoth Crest, which offers slightly lower exposure and easier winter access, and the Inyo Crests to the east, which are drier but equally windswept. Mammoth Mountain to the north is more developed and crowded but offers lift access. The pass itself is not a summit; it is a passage between peaks. Climbers bound for the surrounding 12000-foot ridges often traverse Hopkins Pass as part of longer traverses. Spring conditions here are less stable than autumn; plan for avalanche rescue kit and beacon proficiency.