Location and surroundings
Situated in the United States in Washington state, Sloan Peak lies within Snohomish County and is part of the Mount Baker–Snoqualmie National Forest. The mountain sits between the north and south forks of the Sauk River and is located about 40 miles east of Everett and approximately 4 miles east of the Mountain Loop Highway. As part of the Monte Cristo Area within the North Cascades, Sloan Peak is the highest of 45 named peaks in its local area. The surrounding landscape features rugged topography, deep glacial valleys, and steep forested slopes.
Neighbouring peaks
Sloan Peak is surrounded by several prominent summits and ridges in the North Cascades. The nearest neighbouring peaks and passes include:
- Bedal Peak, a peak standing at 1,980 m, located 3.2 km north.
- Foggy Peak, a peak standing at 2,076 m, located 5.2 km south.
- Sheep Mountain, a peak standing at 1,879 m, located 6.1 km west.
- Cadet Peak, a peak standing at 2,191 m, located 6.3 km south.
- Painted Mountain, a peak standing at 2,106 m, located 7.4 km northeast.
- Barlow Point, a peak standing at 982 m, located 7.7 km west.
- Ira Spring Mountain, a peak standing at 1,713 m, located 7.8 km north.
- Monte Cristo Peak, a peak standing at 2,140 m, located 7.8 km south.
Standing at 2,388 metres, Sloan Peak surpasses all of these immediate neighbours in elevation, maintaining its status as the highest point in the Monte Cristo Area.
The view from the summit
From the high summit of Sloan Peak, observers can spot several giants of the North Cascades within a 25 km radius. The highest peaks visible within this distance include Glacier Peak at 3,214 m situated 18.5 km northeast, Kennedy Peak at 2,518 m located 18.9 km northeast, Tenpeak Mountain at 2,505 m located 23.1 km east, Kololo Peak-East at 2,499 m located 18.6 km east, Glacier Gap Peak at 2,359 m located 17.5 km east, and Kyes Peak at 2,220 m located 8.6 km south. Additionally, Glacier Peak, one of the region's prominent Cascade stratovolcanoes, lies about 12 miles northeast.
The range
Sloan Peak belongs to a complex mountain system spanning the North American Cordillera, descending through the Pacific Coast Ranges into the Cascade Range and the North Cascades. Within this vast region, it is anchored specifically in the Mountain Loop Area and the Monte Cristo Area. The Monte Cristo Area contains 45 named peaks, and at 2,388 metres, Sloan Peak stands as the absolute high point of this specific area. Its isolated position west of the main Cascade crest gives it an extraordinary sense of local relief, rising more than one vertical mile above the valley floor.
Climbing routes
The standard route to the summit is known as the Corkscrew Route, a winding path that climbs the South Face and Upper West Face. It originates on the north side of the mountain, traverses the Sloan Glacier to the east edge of the South Face, and circles the peak to reach the top via the Upper West Face. This route involves snow and glacier climbing alongside class 3 rock scrambling. Other more technical routes exist on the other faces of Sloan Peak for experienced mountaineers.
Access and starting points
Access to the approaches of Sloan Peak is facilitated by the Mountain Loop Highway, situated about 4 miles west of the summit. The mountain lies within the Mount Baker–Snoqualmie National Forest between the north and south forks of the Sauk River, roughly 40 miles east of Everett, Washington. Climbers generally approach the base via established forest roads and trails connecting to the north side of the peak for the standard ascent route.
Climate and weather
According to estimates from NASA POWER climate data covering 2001 to 2020 with temperatures adjusted to the summit elevation, the mean monthly temperatures at the top of Sloan Peak are about -8 °C in December, -7 °C in January and February, -6 °C in March, -4 °C in April, -1 °C in October, -5 °C in November, 0 °C in May, 2 °C in June, 4 °C in September, and 6 °C in July and August. Precipitation in the surrounding area totals about 1,850 mm a year, with monthly amounts ranging from about 35 mm in July and 40 mm in August up to 285 mm in November and 265 mm in January. Located in a marine west coast climate zone, Pacific weather fronts drop heavy moisture via orographic lift, leading to high winter snowfall and significant avalanche danger.
Best time to visit
The months with a mean temperature above freezing at the summit are June, July, August, and September. These summer months also correspond with the drier periods of the year when precipitation drops significantly—reaching lows of about 35 mm in July and 40 mm in August—and Pacific high-pressure systems often reduce cloud cover. Consequently, late June through September offers the most favorable window for attempting the glacier and rock routes on Sloan Peak.
Nature and wildlife
The terrain around Sloan Peak is characterized by rugged topography, steep rock spires, ridges, and U-shaped glacial valleys formed by historical glaciation. Lower elevations support dense coniferous forests typical of the western slopes of the Cascade Range, transitioning into alpine meadows, bare rock, and permanent snow and ice fields near the upper elevations. Wildlife in this protected forest environment includes typical North Cascades fauna adapted to maritime alpine zones, ranging from forest mammals to high-altitude birds.
Guides and organised ascents
For glacier travel and class 3 rock scrambling on peaks of this height in the United States, hiring a certified professional mountain guide is advisable for less experienced climbers. Visitors seeking instruction or guided programs typically look to organizations affiliated with the American Mountain Guides Association, which is an IFMGA/UIAGM member, or consult the American Alpine Club. Established guiding companies operating in the country include RMI Expeditions based in Ashford, Washington, and Exum Mountain Guides based in Moose, Wyoming. A guided ascent typically covers technical instruction, safety equipment, route navigation, and pacing, with pricing dependent on trip duration, guide-to-client ratio, and logistics. Climbers should also check current land agency regulations for any required climbing registrations or permits before heading out.
Safety and preparation
Ascending Sloan Peak requires solid mountaineering skills, experience with snow and glacier travel, and competence in class 3 rock scrambling. Climbers must be prepared for rapidly changing maritime weather, crevasse hazards on the Sloan Glacier, and wet, heavy snow conditions that elevate avalanche risks. For any emergency in the mountains of the United States, dial 911 to reach dispatchers who coordinate with local search and rescue teams typically managed by the county sheriff or national park service.
History and name
Sloan Peak has earned the nickname the "Matterhorn of the Cascades" due to its sharp, high pyramid shape, impressive local relief, and isolated position west of the Cascade crest. Historically, the mountain was first climbed on July 30, 1921, by Harry Bedal and Nels Skaar, who successfully completed the first ascent via the route now known as the Corkscrew Route.
Interesting facts
Sloan Peak rises more than one vertical mile above the valley floor in less than two horizontal miles on both its east and southwest sides. It holds the rank of being the highest of 45 named peaks in the Monte Cristo Area. Its famous climbing route, the Corkscrew Route, is uniquely structured as it starts on the north side, traverses the Sloan Glacier, rounds the eastern face, and finishes via the Upper West Face.
FAQ
What is the elevation of Sloan Peak? Sloan Peak stands at an elevation of 2,388 metres (7,835 feet).
Where is Sloan Peak located? It is located in the United States, in the state of Washington, Snohomish County, within the Mount Baker–Snoqualmie National Forest of the North Cascades.
What mountain range does Sloan Peak belong to? It belongs to the North American Cordillera, Pacific Coast Ranges, Cascade Range, North Cascades, Mountain Loop Area, and the Monte Cristo Area.
What are the nearest peaks to Sloan Peak? The nearest peaks include Bedal Peak, Foggy Peak, Sheep Mountain, Cadet Peak, Painted Mountain, Barlow Point, Ira Spring Mountain, and Monte Cristo Peak.
Is there water on the way to Sloan Peak? Natural water sources such as streams and seasonal snowmelt are available along the lower approaches and near the glacier, but climbers must treat all backcountry water before drinking and carry sufficient supplies for dry ridges.
Who made the first ascent of Sloan Peak? Harry Bedal and Nels Skaar made the first ascent on July 30, 1921, via the Corkscrew Route.
What is the standard route up Sloan Peak? The standard route is the Corkscrew Route, which involves snow and glacier climbing as well as class 3 rock scrambling.