Mountains in the United States

Scenic view of Cascade Mountain Range at sunrise with lush green pine trees and clear sky. | JOHN CALLERY

🏔️ Overview

The mountains of the United States extend from the frozen wilderness of Alaska to the tropical volcanoes of Hawaii, the rugged ranges of the American West, and the forested ridges of the eastern Appalachians. Together, these landscapes include active volcanoes, enormous glaciers, desert peaks, alpine tundra, ancient folded mountains, granite cliffs, and some of North America’s most celebrated hiking trails.

The country’s highest mountains are concentrated in Alaska. Mount McKinley—widely known by its Indigenous name, Denali—rises to 20,310 feet (6,190 meters), making it the highest mountain in both the United States and North America. The federal government restored the official name Mount McKinley in 2025, although Denali remains deeply established in Alaska and continues to be widely used.

Outside Alaska, the American mountain landscape is dominated by the Rocky Mountains, Sierra Nevada, Cascade Range, Basin and Range Province, Coast Ranges, and Appalachian Mountains. These ranges influence weather, supply water to major rivers and cities, support extraordinary wildlife, and provide countless opportunities for hiking, climbing, skiing, camping, and wildlife viewing.

⚡ Fast Facts

Fact	Details
Continent	North America
Country	United States
Highest Mountain	Mount McKinley (Denali)
Elevation	20,310 feet / 6,190 meters
Highest Mountain in the Contiguous United States	Mount Whitney
Highest Mountain in the Rocky Mountains	Mount Elbert
Highest Mountain in the Appalachian Mountains	Mount Mitchell
Highest Volcano	Mount Bona
Major Mountain Systems	Alaska Range, Saint Elias Mountains, Rocky Mountains, Sierra Nevada, Cascades, Appalachians, Coast Ranges, Brooks Range, Basin and Range
Famous Long-Distance Trails	Appalachian Trail, Pacific Crest Trail, Continental Divide Trail
Most Mountainous Regions	Alaska, the western United States, Hawaii, and the Appalachian corridor

📍 Where Are the Mountains in the United States?

Mountainous terrain occurs in nearly every region of the country, but the largest and highest ranges lie in Alaska and the western states.

Alaska contains the nation’s ten highest independent mountains, including Mount McKinley, Mount Saint Elias, Mount Foraker, and Mount Bona. Vast glaciers, severe weather, limited road access, and long distances between settlements make many Alaskan mountains true expedition environments.

The western United States contains the Rockies, Sierra Nevada, Cascades, Coast Ranges, and hundreds of smaller ranges scattered across the Great Basin and Southwest. Colorado alone has dozens of summits exceeding 14,000 feet, while California, Washington, Wyoming, Montana, Nevada, Utah, Arizona, Idaho, Oregon, and New Mexico all contain extensive high country.

In the East, the Appalachians form a broad mountain belt extending from the Canadian border to Alabama. Although lower than the western ranges, the Appalachians contain long ridges, deep forests, waterfalls, rocky summits, and some of the country’s most biologically diverse mountain habitats.

Hawaii adds an entirely different mountain environment. Its islands were constructed by enormous shield volcanoes, including Mauna Kea, Mauna Loa, Haleakalā, and the active volcanic landscape of Kīlauea.

📏 Ten Highest Mountains in the United States

This table lists independent mountains only. Subsidiary summits belonging to a higher mountain are not ranked separately. Border summits are included when the highest point lies on the United States–Canada boundary.

Rank	Mountain	Elevation	Mountain Range	Location
1	Mount McKinley (Denali)	20,310 ft / 6,190 m	Alaska Range	Alaska
2	Mount Saint Elias	18,008 ft / 5,489 m	Saint Elias Mountains	Alaska–Yukon border
3	Mount Foraker	17,400 ft / 5,304 m	Alaska Range	Alaska
4	Mount Bona	16,550 ft / 5,044 m	Saint Elias Mountains	Alaska
5	Mount Blackburn	16,390 ft / 4,996 m	Wrangell Mountains	Alaska
6	Mount Sanford	16,237 ft / 4,949 m	Wrangell Mountains	Alaska
7	Mount Fairweather	15,324 ft / 4,671 m	Saint Elias Mountains	Alaska–British Columbia border
8	Mount Hubbard	14,951 ft / 4,557 m	Saint Elias Mountains	Alaska–Yukon border
9	Mount Bear	14,831 ft / 4,520 m	Saint Elias Mountains	Alaska
10	Mount Hunter	14,573 ft / 4,442 m	Alaska Range	Alaska

Several very high named features are excluded because they are subsidiary summits. These include the North Peak of Mount McKinley and Good Neighbor Peak, the border summit of Mount Vancouver. Mount Vancouver’s highest summit lies in Yukon, Canada, rather than on the international boundary.

Mount Whitney, at approximately 14,505 feet (4,421 meters), is the highest mountain in the contiguous United States but falls just outside the national top ten because of Alaska’s exceptionally high peaks.

🗺️ Major Mountain Ranges of the United States

Alaska Range

The Alaska Range forms a sweeping arc across south-central Alaska. Its centerpiece is Mount McKinley, accompanied by Mount Foraker, Mount Hunter, Mount Hayes, and numerous remote glaciated peaks.

The range is still being uplifted by powerful tectonic forces associated with southern Alaska’s active plate boundary. Its combination of extreme cold, large glaciers, severe storms, crevasses, and isolation creates some of the most demanding mountaineering terrain in North America.

Saint Elias and Wrangell Mountains

The Saint Elias Mountains rise along the border between Alaska, Yukon, and British Columbia. They contain Mount Saint Elias, Mount Bona, Mount Fairweather, Mount Hubbard, and Mount Bear.

Immediately inland, the Wrangell Mountains include enormous volcanic peaks such as Mount Blackburn and Mount Sanford. Together, the Wrangell and Saint Elias ranges form one of the largest concentrations of glaciers and high mountains outside the polar regions.

Rocky Mountains

The Rocky Mountains extend from Canada through Montana, Idaho, Wyoming, Colorado, Utah, and New Mexico. They are not one continuous ridge but a vast system of individual ranges separated by valleys, plateaus, and basins.

Major American subranges include the Front Range, Sawatch Range, Wind River Range, Bighorn Mountains, San Juan Mountains, Sangre de Cristo Range, and Mosquito Range.

Mount Elbert in Colorado is the highest summit in the Rockies. Other famous Rocky Mountain peaks include Longs Peak, Grand Teton, Pikes Peak, Gannett Peak, and Wheeler Peak.

Sierra Nevada

The Sierra Nevada rises along the eastern side of California, with a smaller portion extending into Nevada. The range is known for its enormous granite formations, alpine lakes, giant sequoias, glacial valleys, and steep eastern escarpment.

Mount Whitney is its highest point and the highest mountain in the contiguous United States. Yosemite Valley, Kings Canyon, the Palisades, and the John Muir Trail are among the Sierra Nevada’s most famous landscapes and destinations.

Cascade Range

The Cascade Range extends from northern California through Oregon and Washington into British Columbia. Unlike the mostly granitic Sierra Nevada, the Cascades contain a chain of prominent volcanoes produced by subduction along the western edge of North America.

Mount Rainier is the range’s highest summit in the United States. Other major Cascade volcanoes include Mount Shasta, Mount Adams, Mount Hood, Mount Baker, Glacier Peak, Lassen Peak, and Mount St. Helens.

Several Cascade volcanoes remain active or potentially active, making the range one of the country’s most closely monitored volcanic regions.

Appalachian Mountains

The Appalachian Mountains form an ancient system of folded and uplifted mountains stretching across the eastern United States. American subranges and regions include the Blue Ridge Mountains, White Mountains, Green Mountains, Allegheny Mountains, Cumberland Mountains, and Great Smoky Mountains.

Mount Mitchell in North Carolina reaches 6,684 feet (2,037 meters), making it the highest point in the Appalachians and the highest summit in the United States east of the Mississippi River.

The Appalachians are much lower and more rounded than the Rockies because they have experienced hundreds of millions of years of weathering and erosion.

Brooks Range

The Brooks Range crosses northern Alaska from west to east. Located largely above the Arctic Circle, it forms the divide between Alaska’s interior river systems and the Arctic Coastal Plain.

The range contains vast roadless areas, Arctic tundra, wild rivers, caribou migration routes, and isolated summits. Mount Isto is generally recognized as its highest peak.

Basin and Range Province

Nevada, western Utah, eastern California, southern Oregon, Idaho, Arizona, and New Mexico contain hundreds of narrow mountain ranges separated by broad valleys. This repeating pattern developed as the Earth’s crust stretched and fractured into uplifted blocks and down-dropped basins.

Important ranges include the Snake Range, Ruby Mountains, Toiyabe Range, Spring Mountains, White Mountains, and numerous desert ranges surrounding Death Valley and the Great Basin.

Hawaiian Mountains

The Hawaiian Islands are the exposed summits of enormous volcanoes rising from the Pacific seafloor. Mauna Kea reaches 13,803 feet (4,207 meters) above sea level, but its total height from its submarine base exceeds that of Mount Everest measured from base to summit.

Mauna Loa is one of the world’s largest active volcanoes by volume and area. Hawaii’s mountain environments range from tropical forest and lava desert to alpine terrain where snow occasionally falls during winter storms.

🪨 Geology

The mountains of the United States were created by several different geological processes.

The Alaska Range and coastal mountains of Alaska continue to rise where tectonic plates, faults, and fragments of crust interact along the northern Pacific margin. This active setting also produces earthquakes, volcanoes, glaciers, and rapid erosion.

The Rocky Mountains were raised primarily during the Laramide orogeny, a major mountain-building episode that began during the Late Cretaceous. Later erosion and glaciation carved the modern peaks and valleys.

The Sierra Nevada consists largely of granite formed when magma cooled deep underground. Uplift exposed this enormous batholith, while glaciers later carved Yosemite Valley, Kings Canyon, and many of the range’s alpine basins.

The Cascade volcanoes developed above the subduction zone where oceanic crust descends beneath North America. Magma generated in this setting feeds volcanoes from northern California to Washington.

The Appalachian Mountains originated through several ancient continental collisions associated with the assembly of Pangaea. Once comparable in scale to much younger mountain systems, they have been greatly reduced by long-term erosion.

Hawaii’s volcanoes formed as the Pacific Plate moved across a relatively stationary mantle hotspot, producing an island chain that becomes progressively older toward the northwest.

🌿 Flora and Fauna

The enormous geographic range of America’s mountains supports nearly every type of mountain ecosystem found in North America.

Alaska’s high mountains contain glaciers, snowfields, alpine tundra, and boreal forests. Wildlife includes Dall sheep, caribou, moose, brown bears, wolves, wolverines, golden eagles, and Arctic ground squirrels.

The Rockies support elk, bighorn sheep, mountain goats, black bears, grizzly bears in the northern ranges, pikas, marmots, and numerous birds of prey. Vegetation changes from grassland and pine forest to spruce-fir forest and alpine tundra as elevation increases.

The Sierra Nevada is famous for giant sequoias, foxtail pines, alpine wildflowers, black bears, mule deer, Sierra Nevada bighorn sheep, and diverse aquatic ecosystems.

The moist western slopes of the Cascades support dense forests of Douglas fir, western hemlock, and western red cedar. Higher elevations contain subalpine meadows, glaciers, and volcanic terrain.

The Appalachians contain exceptionally diverse temperate forests. Black bears, white-tailed deer, salamanders, wild turkeys, bobcats, and thousands of plant species inhabit their ridges and valleys.

🥾 Hiking and Climbing

The United States offers mountain adventures for nearly every experience level. Visitors can choose short forest walks, waterfall trails, alpine lake hikes, high-elevation summit routes, multi-day backpacking journeys, technical rock climbs, or major glaciated expeditions.

Three long-distance trails are especially important:

The Appalachian Trail follows the Appalachian Mountains from Georgia to Maine.
The Pacific Crest Trail crosses the Sierra Nevada and Cascades between Mexico and Canada.
The Continental Divide Trail follows the high spine of the Rocky Mountains.

Accessible hiking destinations include Great Smoky Mountains National Park, Shenandoah National Park, Rocky Mountain National Park, Yosemite National Park, Olympic National Park, Glacier National Park, and the White Mountains of New Hampshire.

More serious summit objectives include Mount Whitney, Mount Rainier, Grand Teton, Mount Shasta, Longs Peak, and many of Colorado’s fourteeners. Alaska’s highest mountains require expedition-level skills, glacier training, extensive planning, and the ability to operate in severe weather.

🏔️ Field Guide Tip: Elevation alone does not determine a mountain’s difficulty. Weather, snow, glaciers, exposure, route-finding, remoteness, river crossings, wildfire conditions, and the quality of the descent can make a lower mountain more dangerous than a higher one.

🌤️ Best Time to Visit

The best season depends heavily on the region and activity.

Summer is generally the main hiking season in Alaska, the Rockies, Sierra Nevada, Cascades, and northern Appalachians. High passes may remain snow-covered well into June or July, especially following a snowy winter.

Spring and autumn are often ideal in the southern Appalachians, desert Southwest, and lower elevations of the western ranges. Summer temperatures can become dangerously hot in desert mountains, while afternoon thunderstorms are a frequent hazard in the Rockies.

Autumn brings colorful foliage to New England, the Blue Ridge Mountains, Great Smoky Mountains, and many lower-elevation western forests.

Winter supports skiing, snowshoeing, ice climbing, and mountaineering but introduces avalanche danger, extreme cold, short daylight hours, and difficult navigation.

Always check local forecasts, trail reports, wildfire restrictions, avalanche bulletins, road closures, and permit requirements before beginning a mountain trip.

💡 Fun Facts

All ten of the highest independent mountains in the United States are in Alaska.
Mount McKinley rises more than three vertical miles from its surrounding lowlands, giving it one of the greatest visible base-to-summit rises on Earth.
Mount Whitney is more than 5,800 feet lower than Mount McKinley despite being the highest summit in the contiguous states.
Mount Bona is the highest volcano in the United States and one of the highest volcanoes in North America.
Mount Fairweather’s name is famously misleading because the mountain is exposed to severe storms from the Gulf of Alaska.
Mauna Kea is taller than Mount Everest when both mountains are measured from their geological bases rather than from sea level.
The Appalachians began forming hundreds of millions of years before the modern Rockies.
Nevada contains more individually named mountain ranges than any other state.

❓ Frequently Asked Questions

What is the highest mountain in the United States?

Mount McKinley, widely known as Denali, is the highest mountain in the United States and North America. Its summit reaches 20,310 feet (6,190 meters).

Why does the mountain have two names?

Denali is an Indigenous name with deep cultural and historical importance in Alaska. The federal name was changed from Mount McKinley to Denali in 2015 and restored to Mount McKinley in 2025. Both names remain widely recognized.

What is the highest mountain in the Lower 48?

Mount Whitney in California is the highest mountain in the contiguous United States, reaching approximately 14,505 feet (4,421 meters).

Are the ten highest U.S. mountains all in Alaska?

Yes. Alaska’s major ranges rise substantially higher than the mountains of the contiguous United States.

What is the highest mountain in the Rocky Mountains?

Mount Elbert in Colorado is the highest summit in the Rocky Mountains.

What is the highest mountain in the eastern United States?

Mount Mitchell in North Carolina is the highest summit in the Appalachian Mountains and the highest point east of the Mississippi River.

Which U.S. mountain range has active volcanoes?

The Cascade Range, Alaska’s volcanic ranges, the Aleutian Mountains, and Hawaii all contain active or potentially active volcanoes.

Which mountain range is best for hiking?

The best range depends on the desired experience. The Appalachians offer extensive forest trails, the Rockies provide high alpine hiking, the Sierra Nevada combines granite scenery with long-distance routes, and the Cascades feature volcanoes, glaciers, and evergreen forests.

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