Lably
Skip to content

Extremes on Earth

  • 27 min read
  • 8 chapters
  • 1 lab on Lably

Learn it on Lably

Latitude and longitude

Northernmost

  • The northernmost point of land is the northern tip of Kaffeklubben Island, north of Greenland (83°40′N 29°50′W / 83.667°N 29.833°W), which lies slightly north of Cape Morris Jesup, Greenland (83°38′N 32°40′W / 83.633°N 32.667°W). Various shifting gravel bars lie farther north, the most famous being Oodaaq. There have been other islands more northern such as 83-42 and ATOW1996 but they have not been confirmed as permanent.

Southernmost

  • The southernmost continental point of land outside Antarctica is in South America at Cape Froward, Magallanes Region, Chile (53°53′34.6″S 71°18′23.1″W / 53.892944°S 71.306417°W).
  • The southernmost point of (liquid) water is a bay on the Filchner–Ronne Ice Shelf along the coast of Antarctica (83°S 59°W / 83°S 59°W), about 100 km (60 mi) south of Berkner Island.
    • The southernmost point of ocean is located on the Gould Coast (84°30′S 150°0′W / 84.500°S 150.000°W).
    • The southernmost point of open ocean is in the Bay of Whales, also part of the Ross Sea, at 78°30'S, at the edge of the Ross Ice Shelf.
      • The southernmost island is considered to be Deverall Island, near the Shackleton Coast, surrounded by the Ross Ice Shelf although there is an island in Lake Vostok but it is currently under ice.

Easternmost and westernmost

  • The easternmost and westernmost points on Earth, based on the east–west standard for describing longitude, can be found anywhere along the 180th meridian, which passes through the Arctic, Pacific, and Southern Oceans, as well as parts of Siberia (including Wrangel Island), Antarctica, and three islands of Fiji (Vanua Levu's eastern peninsula, the middle of Taveuni, and the western part of Rabi Island).
    • Using instead the path of the International Date Line (which is not a straight line), i.e. define "easternmost" as "the first to see a new day" and define "westernmost" as "the last to see a new day", the westernmost point on land is Attu Island, Alaska, and the easternmost point on land is Caroline Island, Kiribati.

Longest grid lines

Along constant latitude

  • The longest continuous east–west distance on land is 10,726 km (6,665 mi) along the latitude 48°24'53"N, from the west coast of France (Pointe de Corsen, 48°24′53″N 4°47′44″W / 48.41472°N 4.79556°W) through Central Europe, Ukraine, Russia, Kazakhstan, Mongolia and China, to a point on the east coast of Russia (48°24′53″N 140°6′3″E / 48.41472°N 140.10083°E).
  • The longest continuous east–west distance at sea is 22,471 km (13,963 mi) along the latitude 55°59'S, south of Cape Horn, South America.
    • The longest continuous east–west distance at sea between two continents is 15,409 km (9,575 mi) along the latitude 18°39'12"N, from the coast of Hainan, China (18°39′12″N 110°15′9″E / 18.65333°N 110.25250°E) across the Pacific Ocean to the coast of Michoacán, Mexico (18°39′12″N 103°42′6″W / 18.65333°N 103.70167°W).

Along constant longitude

  • The longest continuous north–south distance on land is 7,590 km (4,720 mi) along the meridian 99°1'30"E, from the northern tip of Siberia in the Russian Federation (76°13′6″N 99°1′30″E / 76.21833°N 99.02500°E), through Mongolia, China, and Myanmar, to a point on the south coast of Thailand (7°53′24″N 99°1′30″E / 7.89000°N 99.02500°E).
    • The longest in Africa is 7,417 km (4,609 mi) along the meridian 20°12'E, from the north coast of Libya (32°19′0″N 20°12′0″E / 32.31667°N 20.20000°E), through Chad, Central African Republic, Democratic Republic of the Congo, Angola, Namibia, and Botswana, to the south coast of South Africa (34°41′30″S 20°12′0″E / 34.69167°S 20.20000°E).
    • The longest in South America is the length 7,098 km (4,410 mi) along the meridian 70°2'W, from the north coast of Venezuela (11°30′30″N 70°2′0″W / 11.50833°N 70.03333°W), through Colombia, Brazil, Peru, and Chile, to the southern tip of Argentina (52°33′30″S 70°2′0″W / 52.55833°S 70.03333°W).
    • The longest in North America is 5,813 km (3,612 mi) along the meridian 97°52'30"W, from northern Canada (68°21′0″N 97°52′30″W / 68.35000°N 97.87500°W), through the United States, to southern Mexico (16°1′0″N 97°52′30″W / 16.01667°N 97.87500°W).
  • The longest continuous north–south distance at sea is 15,986 km (9,933 mi) along the meridian 34°45'45"W, from the coast of Eastern Greenland (66°23′45″N 34°45′45″W / 66.39583°N 34.76250°W) across the Atlantic Ocean to the Filchner-Ronne Ice Shelf, on the coast of Antarctica (77°37′0″S 34°45′45″W / 77.61667°S 34.76250°W). The longest in the Pacific Ocean is 15,883 km (9,869 mi) along the meridian 172°8'30"W, from the coast of Siberia (64°45′0″N 172°8′30″W / 64.75000°N 172.14167°W) to the Ross Ice Shelf in Antarctica (78°20′0″S 172°8′30″W / 78.33333°S 172.14167°W).
  • The meridian that crosses the greatest total distance on land (disregarding intervening bodies of water) is still to be determined. It is likely located in the vicinity of 22°E, which is the longest integer meridian that fits that criterion, crossing a total of 13,035 km (8,100 mi) of land through Europe (3,370 km or 2,090 mi), Africa (7,458 km or 4,634 mi), and Antarctica (2,207 km or 1,371 mi). More than 65% of this meridian's length is located on land. The next six longest integer meridians by total distance over land are, in order:
    • 23°E: 12,953 km (8,049 mi) through Europe (3,325 km or 2,066 mi), Africa (7,415 km or 4,607 mi), and Antarctica (2,214 km or 1,376 mi)
    • 27°E: 12,943 km (8,042 mi) through Europe (3,254 km or 2,022 mi), Asia (246 km or 153 mi), Africa (7,223 km or 4,488 mi), and Antarctica (2,221 km or 1,380 mi)
    • 25°E: 12,875 km (8,000 mi) through Europe (3,344 km or 2,078 mi), Africa (7,327 km or 4,553 mi), and Antarctica (2,204 km or 1,370 mi)
    • 26°E: 12,858 km (7,990 mi) through Europe (3,404 km or 2,115 mi), Africa (7,258 km or 4,510 mi), and Antarctica (2,196 km or 1,365 mi)
    • 24°E: 12,794 km (7,950 mi) through Europe (3,263 km or 2,028 mi), Africa (7,346 km or 4,565 mi), and Antarctica (2,185 km or 1,358 mi)
    • 28°E: 12,778 km (7,940 mi) through Europe (3,039 km or 1,888 mi), Asia (388 km or 241 mi), and Africa (7,117 km or 4,422 mi)

Along any geodesic

These are the longest straight lines that can be drawn between any two points on the surface of the Earth and remain exclusively over land or water; the points need not lie on the same line of latitude or longitude.

  • The longest continuous straight-line (great circle) path over land is 13,588 km (8,443 mi) long and spans between the West African coast near Greenville, Liberia (5°2′51.59″N 9°7′23.26″W / 5.0476639°N 9.1231278°W) and a peninsula about 100 km (60 mi) northeast of Wenzhou, China (28°17′7.68″N 121°38′17.31″E / 28.2854667°N 121.6381417°E), passing over the Suez Canal.
  • There are several possible candidates for the longest continuous straight-line distance in any direction at sea, as there are many possible ways to travel along a great circle for more than the antipodic length of 19,840 km (12,330 mi). Some examples of such routes would be:
    • From the south coast of Balochistan province somewhere near Port of Karachi, Pakistan (25°25′N 66°25′E / 25.417°N 66.417°E) across the Arabian Sea, southwest through the Indian Ocean, near Comoros, passing Namaete Canyon, near the South African coast, across the South Atlantic Ocean, then west across Cape Horn, then northwest across the Pacific Ocean, near Easter Island, passing the antipodal point near Emlilia island, through the South Bering Sea and ending somewhere on the northeast coast of Kamchatka, near Ossora (59°38′N 163°24′E / 59.633°N 163.400°E). This route is 32,040 km (19,910 mi) long. This route was confirmed to be the longest (at about 32,090 km or 19,940 mi) given map data at a 1.8 km (1.1 mi) level of resolution.
    • From the south coast of Hormozgan province, Iran (25°35′N 58°22′E / 25.583°N 58.367°E) across the Gulf of Oman, southeast across the Arabian Sea, passing south of Australia and New Zealand, near the Antarctic coast, then northeast across the South Pacific Ocean, passing the antipodal point and ending on the southwest coast of Mexico somewhere near Ciudad Lázaro Cárdenas (17°57′N 101°57′W / 17.950°N 101.950°W). This route is 25,267 km (15,700 mi) long.
    • From Invercargill, New Zealand (46°37′S 168°59′E / 46.617°S 168.983°E) across Cape Horn, then off the coast of Brazil close to Recife, passing north of Cape Verde, passing the antipodal point and ending somewhere on the southwest coast of Ireland (52°09′N 6°34′W / 52.150°N 6.567°W). This route is 20,701 km (12,863 mi) long.

Along any diameter (straight line passing through the centre of the Earth)

As distinct from geodesic lines, which appear straight only when projected onto the spheroidal surface of the Earth (i.e. arcs of great circles), straight lines passing through the Earth's centre can be constructed through the interior of the Earth between almost any two points on the surface of the Earth (some extreme topographical situations such as overhanging cliffs being the rare exceptions). A line projected from the summit of Cayambe in Ecuador (see highest points) through the axial centre of the Earth to its antipode on the island of Sumatra results in the longest diameter that can be produced anywhere through the Earth. As the variable circumference of the Earth approaches 40,000 kilometres (25,000 mi), such a maximum "diameter" or "antipodal" line would be on the order of 13,000 kilometres (8,000 mi) long.

Sign in to keep reading

7 more chapters are free with a Lably account.

More in Physical geography