Location and surroundings
Mount Marshall is located in the town of Newcomb in Essex County, New York, within the United States. Its hierarchical range placement runs from the North America Plains through the Canadian Shield, the Adirondack Mountains, the Adirondack High Peaks, and finally the Macintyre Mountains. Within New York, it ranks as the 28th highest of 3,474 named peaks. The surrounding region is characterized by protected wilderness, valleys, and dense forests typical of the High Peaks Wilderness Area.
Neighbouring peaks
The immediate vicinity of Mount Marshall includes several prominent elevations and passes:
- MacIntyre Mountains (peak), 1,274 m, 0.4 km NE
- Iroquois Peak (peak), 1,472 m, 1.5 km NE
- Boundary Peak (peak), 1,471 m, 1.9 km NE
- Wallface Mountain (peak), 1,131 m, 2.3 km NW
- Algonquin Peak (peak), 1,555 m, 2.6 km NE
- Calamity Mountain (peak), 1,099 m, 2.8 km S
- Avalanche Mountain (peak), 1,161 m, 3.5 km E
- Wright Peak (peak), 1,389 m, 3.7 km NE
The nearest higher peak to Mount Marshall is Iroquois Peak at 1,472 m, located 1.5 km to the northeast.
The view from the summit
From the heights of Mount Marshall, several major Adirondack giants are visible within a 25 km radius. The highest peaks in this wider view include Mount Marcy at 1,629 m located 7.2 km east, Mount Haystack at 1,498 m located 9.2 km east, Dix Mountain at 1,473 m located 18.6 km east, Basin Mountain at 1,468 m located 10.0 km east, Mount Colden at 1,436 m located 4.1 km east, and Gothics at 1,425 m located 12.3 km east.
The range
Mount Marshall belongs to the Macintyre Mountains, where it ranks as the 5th highest out of 9 named peaks. The highest peak of this range is Algonquin Peak, reaching 1,555 m and situated 3 km northeast of Mount Marshall. The range itself forms an integral part of the Adirondack High Peaks within New York.
Climbing routes
There are no marked trails leading directly to the summit of Mount Marshall. Instead, hikers rely on two designated unmarked trails maintained by the Forty-Sixers. The first route begins on Cold Brook Pass near the key col between Marshall and Iroquois Peak, continuing 0.7 miles uphill. The second route follows Herbert Brook from its intersection with trail 121 between the Calamity lean-tos and the Lake Colden dam, merging with the first path to reach the summit after 1.5 miles.
Access and starting points
Access to the trail networks leading toward Mount Marshall commonly begins from locations such as Keene Valley and the Adirondack Loj area. Traditional approaches may utilize lodging facilities like the Adirondack Loj trailhead or routes originating near the Johns Brook area before connecting to local paths and unmarked routes.
Climate and weather
Climate data based on NASA POWER estimates from 2001 to 2020 indicates that the mean temperature at the summit of Mount Marshall reaches its warmest in July at about 14 °C and its coldest in January at about -12 °C. Months with a mean temperature above freezing at the summit include May, June, July, August, September, and October. Precipitation in the surrounding area is about 1,100 mm annually, with June being the wettest month at about 130 mm and January the driest at about 60 mm. Weather hazards in the region typically involve sudden changes in weather, high winds at elevated points, and wet or icy conditions on unmarked terrain.
Best time to visit
The most favorable months to visit Mount Marshall are those with mean temperatures above freezing at the summit, specifically from May through October. During these months, conditions are generally more stable, though hikers must still prepare for variable mountain weather and precipitation patterns.
Nature and wildlife
Located within the High Peaks Wilderness Area of Adirondack Park, the mountain features dense northern hardwood and boreal forests transitioning into alpine or sub-alpine vegetation near the upper elevations. The protected environment supports a variety of regional wildlife native to New York's mountainous terrain.
Guides and organised ascents
For visitors seeking professional assistance in the mountains of the United States, organizations such as the American Mountain Guides Association—which is an IFMGA/UIAGM member—and the American Alpine Club serve as national reference points. Established guiding entities operating within the country include RMI Expeditions based in Ashford, Washington, and Exum Mountain Guides based in Moose, Wyoming. Guided ascents typically cover navigation, safety instruction, and equipment support, with pricing dependent on duration and group size. Visitors should also note that some peaks in the United States require climbing registration or permits from the local land agency.
Safety and preparation
Climbing Mount Marshall requires careful preparation due to the lack of marked trails and the rugged nature of the terrain. In case of an emergency, the standard emergency number for mountain rescue in the United States is 911, which connects callers to dispatchers who alert local search and rescue teams typically managed by the county sheriff.
History and name
The first recorded ascent of Mount Marshall took place on August 13, 1921, executed by brothers Robert Marshall and George Marshall alongside mountain guide Herbert K. Clark. Originally named Mount Clinton after Governor DeWitt Clinton, the peak experienced considerable naming confusion over subsequent decades due to overlapping designations by surveyor Verplanck Colvin. It was later referred to as Herbert Peak in honor of Herbert Clark before being officially renamed Mount Marshall in 1942 by the state Board on Geographic Names following a petition by the Adirondack Forty-Sixers. The United States Board on Geographic Names finally standardized the name in December 1972.
Interesting facts
Mount Marshall ranks as the 5th highest peak among the 9 named mountains in the Macintyre Mountains. Its nearest higher peak is Iroquois Peak, situated 1.5 km to the northeast, while the highest point of the range, Algonquin Peak, lies 3 km away. The mountain is famously one of the original 46 Adirondack High Peaks targeted by the Marshall brothers and Herbert Clark.
FAQ
What is the elevation of Mount Marshall? Mount Marshall has an elevation of 1,333 m.
Where is Mount Marshall located? It is located in the Macintyre Mountains within Essex County, New York, United States.
What range does Mount Marshall belong to? It belongs to the Macintyre Mountains, which are part of the Adirondack High Peaks.
What peaks are nearest to Mount Marshall? The nearest peaks include the MacIntyre Mountains peak at 0.4 km away and Iroquois Peak at 1.5 km away.
Is there water on the way to Mount Marshall? Water sources along the route include Herbert Brook and nearby water features, though hikers should carry 1.5 to 3 liters of water and treat any backcountry water before drinking.
Is there mobile phone coverage on Mount Marshall? Mobile phone coverage in the Adirondack high peaks is generally patchy and unreliable due to intervening ridges and valleys; coverage depends heavily on the operator, so maps should be downloaded beforehand and emergency calls can be attempted via 112 over any available network.