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List of ultras of North America

The following sortable tables comprise the most topographically prominent mountain peaks of greater North America. Each of these 353 summits has at least of topographic prominence.

This article defines greater North America as the portion of the continental landmass of the Americas extending westward and northward from the Isthmus of Panama plus the islands surrounding that landmass. This article defines the islands of North America to include the coastal islands of North America, the islands of the Caribbean Sea, the Lucayan Archipelago, the Bermuda Islands, the Islands of Greenland (Kalaallit Nunaat), the islands of Northern Canada, the islands of Alaska, and the islands of the northeastern Pacific Ocean. The Hawaiian Islands are not included because they are considered part of Oceania. With the exceptions of North Carolina's Mount Mitchell and New Hampshire's Mount Washington, all of the ultras in the United States are found west of the 100th parallel.

Topographic elevation is the vertical distance above the reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface. The topographic prominence of a summit is the elevation difference between that summit and the highest or key col to a higher summit. The topographic isolation of a summit is the minimum great-circle distance to a point of equal elevation.

All elevations in the 48 states of the contiguous United States include an elevation adjustment from the National Geodetic Vertical Datum of 1929 (NGVD 29) to the North American Vertical Datum of 1988 (NAVD 88). For further information, please see this United States National Geodetic Survey note. If a summit elevation or prominence has a range of values, the arithmetic mean is cited.

Distribution

The majority of ultra-prominent peaks are in western North America (especially Alaska, Yukon, and British Columbia), as well as a sizeable minority of peaks along the coast of the southern half of Greenland and the northeastern part of Nunavut.

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Ultra-prominent summits

The following sortable table comprises the 353 ultra-prominent summits of greater North America. Each of these peaks has at least of topographic prominence.

The summit of a mountain or hill may be measured in three principal ways:

  1. The topographic elevation of a summit measures the height of the summit above a geodetic sea level.
  2. The topographic prominence of a summit is a measure of how high the summit rises above its surroundings.
  3. The topographic isolation (or radius of dominance) of a summit measures how far the summit lies from its nearest point of equal elevation.

Denali is one of only three summits on Earth with more than of topographic prominence. Mount Logan exceeds of prominence. Four peaks of greater North America exceed , ten exceed , 17 exceed , 34 exceed , 100 exceed , and the following 353 ultra-prominent summits exceed of topographic prominence.

By region

Greenland

Canadian Arctic Archipelago

Brooks Range

Aleutian Islands

Aleutian Range

Alaska Range

Wrangell Mountains

Talkeetna Mountains

Kenai Mountains

Chugach Mountains

Saint Elias Mountains

Mackenzie Mountains and the Yukon Plateau

Alexander Archipelago and Vancouver Island

Coast Mountains

Interior Mountains and Interior Plateau

Columbia Mountains

Canadian Rockies

US Coast Ranges

Cascade Range and Sierra Nevada

Transverse Ranges and US Peninsular Ranges

Intermontane Plateaus

US Rocky Mountains

Appalachian Mountains

Mexico

Central America

Caribbean

Gallery

See also

Notes

References

External links