Bull Run Peak
Peak · 9,491 ft · Yosemite corridor
Bull Run Peak stands at 9,491 feet in the Yosemite corridor of the Sierra Nevada, a moderate summit with avalanche terrain requiring careful seasonal planning.
Wind accelerates here by mid-afternoon, pushing across the high-Sierra exposure. Morning conditions are calmer. Spring snowpack makes approach timing critical. Route-finding requires avalanche awareness on steeper sections.
The 30-day average wind of 8 mph masks afternoon gusts to 19 mph common in spring. Temperature hovers near 33 degrees, so expect lingering snow and frozen ground in early morning hours. Crowding remains light at 3.0 on the NoGo scale. The week ahead will show whether thaw patterns accelerate or hold.
30 days back / 7 days forward
Today's score by factor
About Bull Run Peak
Bull Run Peak sits in the eastern Yosemite corridor, a 9,491-foot summit accessed primarily from Highway 120 via the Tioga Road corridor and surrounding high-Sierra passes. The peak lies in the boundary zone between Yosemite backcountry and the Mono Basin, placing it in steeper, more avalanche-prone terrain than western Sierra approaches. Gateway towns include Lee Vining and Mammoth Lakes to the east. Access typically requires a backpack approach through meadow and forest to sub-alpine terrain. Base popularity remains low at 0.2, meaning you will see fewer parties than equivalent peaks near Yosemite Valley or Tuolumne Meadows.
Spring conditions dominate the current window. The 30-day average temperature of 33 degrees confirms persistent snowpack. Wind averages 8 mph but regularly peaks at 19 mph in afternoon hours, making early starts essential for safety and visibility. The SAC avalanche center manages forecasts for this zone. Bull Run Peak has avalanche terrain; southern and eastern-facing slopes steepen dramatically and hold slab instability longer into the season than wind-scoured ridges. The 30-day rolling score of 31 reflects a mixed-to-challenging window: manageable on calm mornings, deteriorating by midday. Crowding at 3.0 suggests light traffic, though this will rise sharply once Highway 120 fully opens and high passes clear.
This peak suits experienced alpinists with avalanche training and mountaineers comfortable with snow travel. Do not approach without an avalanche beacon, shovel, and probe. Route selection is critical; gullies and couloirs funnel slides, while ridgelines offer exposure to afternoon wind but faster travel on consolidated snow. Solitude is likely, but isolation means rescue response times are long. Most climbers plan this ascent for May onward, when consolidation improves and days lengthen. Early-season (April) ascents require real-time avalanche forecast consultation and conservative slope selection.
Nearby alternatives in the Yosemite corridor include Mammoth Peak and Mount Gibbs, both accessed from Highway 120 and offering similar elevation and seasonal constraints. Mammoth Peak trends warmer and less avalanche-prone due to south-facing exposure. Mount Gibbs sits closer to the Tioga Road corridor and draws slightly higher traffic. For lower-elevation alternatives without avalanche terrain, the June Lake Loop (Highway 158) offers non-technical peaks and lower crowding. If Highway 120 is closed, approach via US-395 and wilderness routes adds 1 to 2 hours of driving and significant mileage.