1 E6 m
Encyclopedia
Length
In geometric measurements, length most commonly refers to the longest dimension of an object.In certain contexts, the term "length" is reserved for a certain dimension of an object along which the length is measured. For example it is possible to cut a length of a wire which is shorter than wire...
s starting at 106 m
Metre
The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...
(1 Mm
Megametre
A megametre is a unit of length in the metric system, equal to one million metres, the SI base unit of length, hence to 1,000 km or approximately 621.37 miles....
or 1,000 km
Kilometre
The kilometre is a unit of length in the metric system, equal to one thousand metres and is therefore exactly equal to the distance travelled by light in free space in of a second...
).
Distances shorter than 106 metres
Conversions
1 megametre is equal to:- 1 E+6 m (one million metres)
- approximately 621.37 mileMileA mile is a unit of length, most commonly 5,280 feet . The mile of 5,280 feet is sometimes called the statute mile or land mile to distinguish it from the nautical mile...
s - Side of squareSquare (geometry)In geometry, a square is a regular quadrilateral. This means that it has four equal sides and four equal angles...
with area 1,000,000 km2
Human-defined scales and structures
- 2.100 Mm — Length of proposed gas pipeline from Iran to India via Pakistan
- 2.288 Mm — Length of the official Alaska HighwayAlaska HighwayThe Alaska Highway was constructed during World War II for the purpose of connecting the contiguous U.S. to Alaska through Canada. It begins at the junction with several Canadian highways in Dawson Creek, British Columbia and runs to Delta Junction, Alaska, via Whitehorse, Yukon...
when it was built in the 1940s1940sFile:1940s decade montage.png|Above title bar: events which happened during World War II : From left to right: Troops in an LCVP landing craft approaching "Omaha" Beach on "D-Day"; Adolf Hitler visits Paris, soon after the Battle of France; The Holocaust occurred during the war as Nazi Germany... - 3.069 Mm — Length of Interstate 95Interstate 95Interstate 95 is the main highway on the East Coast of the United States, running parallel to the Atlantic Ocean from Maine to Florida and serving some of the most populated urban areas in the country, including Boston, Providence, New Haven, New York City, Newark, Philadelphia, Baltimore,...
(from Houlton, MaineHoulton, MaineHoulton is a town in Aroostook County, Maine, on the United States – Canada border, located at . As of the 2010 census, the town population was 6,123. It is perhaps best known as being at the northern terminus of Interstate 95 and for being the birthplace of Samantha Smith...
to Miami, FloridaMiami, FloridaMiami is a city located on the Atlantic coast in southeastern Florida and the county seat of Miami-Dade County, the most populous county in Florida and the eighth-most populous county in the United States with a population of 2,500,625...
) - 3.846 Mm — Length of U.S. Route 1U.S. Route 1U.S. Route 1 is a major north–south U.S. Highway that serves the East Coast of the United States. It runs 2,377 miles from Fort Kent, Maine at the Canadian border south to Key West, Florida. U.S. 1 generally parallels Interstate 95, though it is significantly farther west between...
(from Fort Kent, MaineFort Kent, MaineFort Kent is a town in Aroostook County, Maine, United States. The population was 4,097 in the 2010 census. Fort Kent is home to an Olympic biathlete training center, an annual CAN-AM dogsled race, and the Fort Kent Blockhouse, built in reaction to the Aroostook War and in modern times designated...
to Key West, FloridaKey West, FloridaKey West is a city in Monroe County, Florida, United States. The city encompasses the island of Key West, the part of Stock Island north of U.S. 1 , Sigsbee Park , Fleming Key , and Sunset Key...
) - 5.007 Mm — Estimated length of Interstate 90Interstate 90Interstate 90 is the longest Interstate Highway in the United States at . It is the northernmost coast-to-coast interstate, and parallels US 20 for the most part. Its western terminus is in Seattle, at Edgar Martinez Drive S. near Safeco Field and CenturyLink Field, and its eastern terminus is in...
(Seattle, Washington to Boston, Massachusetts) - 5.614 Mm — Length of the Australian Dingo FenceDingo FenceThe Dingo Fence or Dog Fence is a pest-exclusion fence that was built in Australia during the 1880s and finished in 1885, to keep dingoes out of the relatively fertile south-east part of the continent and protect the sheep flocks of southern Queensland. It is one of the longest structures in the...
- 7.821 Mm — Length of the Trans-Canada HighwayTrans-Canada HighwayThe Trans-Canada Highway is a federal-provincial highway system that joins the ten provinces of Canada. It is, along with the Trans-Siberian Highway and Australia's Highway 1, one of the world's longest national highways, with the main route spanning 8,030 km...
, the world's longest national highway (from Victoria, British ColumbiaVictoria, British ColumbiaVictoria is the capital city of British Columbia, Canada and is located on the southern tip of Vancouver Island off Canada's Pacific coast. The city has a population of about 78,000 within the metropolitan area of Greater Victoria, which has a population of 360,063, the 15th most populous Canadian...
to St. John's, Newfoundland) - 8.852 Mm — Aggregate length of the Great Wall of ChinaGreat Wall of ChinaThe Great Wall of China is a series of stone and earthen fortifications in northern China, built originally to protect the northern borders of the Chinese Empire against intrusions by various nomadic groups...
, including trenches, hills and rivers - 9.259 Mm — Length of the Trans-Siberian railwayTrans-Siberian RailwayThe Trans-Siberian Railway is a network of railways connecting Moscow with the Russian Far East and the Sea of Japan. It is the longest railway in the world...
Sports
- 1.200 Mm — the length of the Paris–Brest–Paris bicycling event
- Several endurance auto races are, or were, run for 1,000 km:
- Bathurst 1000Bathurst 1000The Bathurst 1000 is a touring car race held annually at Mount Panorama Circuit in Bathurst, New South Wales, Australia...
- 1000 km Brands Hatch
- 1000 km Buenos Aires1000 km Buenos AiresThe 1000 km Buenos Aires was an endurance sports car event held in Buenos Aires, Argentina. The race mostly run on the Autódromo Oscar Alfredo Gálvez, although it would run the Costanera circuit in 1957...
- 1000 km Donington1000 km DoningtonThe 1000 Kilometres of Donington Park is a sports car race held at Donington Park in the United Kingdom. The event has been held sporadically since 1989.-Results:-External links:**...
- 1000 km Monza
- 1000 km Nürburgring
- 1000 km Silverstone1000 km SilverstoneThe 1000 km of Silverstone is an endurance sports car race held at Silverstone Circuit near the Northamptonshire villages of Silverstone and Whittlebury...
- 1000 km Spa
- 1000 km Suzuka
- 1000 km Zeltweg1000 km ZeltwegThe 1000 km Zeltweg was an endurance sports car event held near Zeltweg, Austria. Originally based at the Zeltweg Airfield, the race moved to the Österreichring where it continued to be a regular event in the World Sportscar Championship.-History:In 1963, Formula One held its first exhibition...
- Bathurst 1000
Nature
- 2.000 Mm — Distance from BeijingBeijingBeijing , also known as Peking , is the capital of the People's Republic of China and one of the most populous cities in the world, with a population of 19,612,368 as of 2010. The city is the country's political, cultural, and educational center, and home to the headquarters for most of China's...
to Hong KongHong KongHong Kong is one of two Special Administrative Regions of the People's Republic of China , the other being Macau. A city-state situated on China's south coast and enclosed by the Pearl River Delta and South China Sea, it is renowned for its expansive skyline and deep natural harbour...
as the crow fliesAs the crow flies"As the crow flies" or beelining is an idiom for the shortest route between two points; the geodesic distance.An example is the great-circle distance between Key West and Pensacola, at either end of the U.S... - 2.800 Mm — Narrowest width of Atlantic OceanAtlantic OceanThe Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...
(Brazil-West Africa) - 2.850 Mm — Length of the DanubeDanubeThe Danube is a river in the Central Europe and the Europe's second longest river after the Volga. It is classified as an international waterway....
river - 2.205 Mm — Length of SwedenGeography of SwedenSweden is a country in Northern Europe on the Scandinavian Peninsula. Its borders are Norway to the west; Finland to the northeast; and the Baltic Sea and Gulf of Bothnia to the east and south....
's total land boundaries - 2.515 Mm — Length of NorwayGeography of NorwayNorway is a country located in Northern Europe on the western and northern part of the Scandinavian Peninsula, bordering the North Sea in southwest and the Skagerrak inlet to the south, the North Atlantic Ocean in the west and the Barents Sea to the northeast...
's total land boundaries - 3.690 Mm — Length of the Volga river, longest in EuropeEuropeEurope is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...
- 4.350 Mm — Length of the Huang He
- 4.715 Mm — Length of the NileNileThe Nile is a major north-flowing river in North Africa, generally regarded as the longest river in the world. It is long. It runs through the ten countries of Sudan, South Sudan, Burundi, Rwanda, Democratic Republic of the Congo, Tanzania, Kenya, Ethiopia, Uganda and Egypt.The Nile has two major...
- 4.800 Mm — Widest width of Atlantic OceanAtlantic OceanThe Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...
(U.S.-Northern Africa) - 5.100 Mm — Distance from Dublin to New York as the crow flies
- 6.270 Mm — Length of the MississippiMississippi RiverThe Mississippi River is the largest river system in North America. Flowing entirely in the United States, this river rises in western Minnesota and meanders slowly southwards for to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains...
-Missouri RiverMissouri RiverThe Missouri River flows through the central United States, and is a tributary of the Mississippi River. It is the longest river in North America and drains the third largest area, though only the thirteenth largest by discharge. The Missouri's watershed encompasses most of the American Great...
system - 6.380 Mm — Length of the Yangtze RiverYangtze RiverThe Yangtze, Yangzi or Cháng Jiāng is the longest river in Asia, and the third-longest in the world. It flows for from the glaciers on the Tibetan Plateau in Qinghai eastward across southwest, central and eastern China before emptying into the East China Sea at Shanghai. It is also one of the...
- 6.762 Mm — Length of the AmazonAmazon RiverThe Amazon of South America is the second longest river in the world and by far the largest by waterflow with an average discharge greater than the next seven largest rivers combined...
system, longest on EarthEarthEarth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets... - 8.200 Mm — Distance from Dublin to San Francisco as the crow flies
Astronomical
- 1.000 Mm — Estimated shortest axis of triaxial dwarf planetDwarf planetA dwarf planet, as defined by the International Astronomical Union , is a celestial body orbiting the Sun that is massive enough to be spherical as a result of its own gravity but has not cleared its neighboring region of planetesimals and is not a satellite...
- 1.186 Mm — Diameter of CharonCharon (moon)Charon is the largest satellite of the dwarf planet Pluto. It was discovered in 1978 at the United States Naval Observatory Flagstaff Station. Following the 2005 discovery of two other natural satellites of Pluto , Charon may also be referred to as Pluto I...
, the largest moon of PlutoPlutoPluto, formal designation 134340 Pluto, is the second-most-massive known dwarf planet in the Solar System and the tenth-most-massive body observed directly orbiting the Sun... - 1.280 Mm — Diameter of the trans-Neptunian object 50000 Quaoar50000 Quaoar50000 Quaoar is a rocky trans-Neptunian object in the Kuiper belt with one known moon. Discovered on June 4, 2002 by astronomers Chad Trujillo and Michael Brown at the California Institute of Technology from images acquired at the Samuel Oschin Telescope at Palomar Observatory, it is thought by...
- 1.436 Mm — Diameter of IapetusIapetus (moon)Iapetus ), occasionally Japetus , is the third-largest moon of Saturn, and eleventh in the Solar System. It was discovered by Giovanni Domenico Cassini in 1671...
, one of SaturnSaturnSaturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. Saturn is named after the Roman god Saturn, equated to the Greek Cronus , the Babylonian Ninurta and the Hindu Shani. Saturn's astronomical symbol represents the Roman god's sickle.Saturn,...
's major moons - 1.578 Mm — Diameter of TitaniaTitania (moon)Titania is the largest of the moons of Uranus and the eighth largest moon in the Solar System at a diameter of 1578 km. Discovered by William Herschel in 1787, Titania is named after the queen of the fairies in Shakespeare's A Midsummer Night's Dream...
, the largest of UranusUranusUranus is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. It is named after the ancient Greek deity of the sky Uranus , the father of Cronus and grandfather of Zeus...
' moons - 1.960 Mm — Estimated longest axis of Haumea
- 2.320 Mm — Diameter of PlutoPlutoPluto, formal designation 134340 Pluto, is the second-most-massive known dwarf planet in the Solar System and the tenth-most-massive body observed directly orbiting the Sun...
- 2.400 Mm — Diameter of the dwarf planet ErisEris (dwarf planet)Eris, formal designation 136199 Eris, is the most massive known dwarf planet in the Solar System and the ninth most massive body known to orbit the Sun directly...
, the largest trans-Neptunian objectTrans-Neptunian objectA trans-Neptunian object is any minor planet in the Solar System that orbits the Sun at a greater distance on average than Neptune.The first trans-Neptunian object to be discovered was Pluto in 1930...
found to date - 2.707 Mm — Diameter of TritonTriton (moon)Triton is the largest moon of the planet Neptune, discovered on October 10, 1846, by English astronomer William Lassell. It is the only large moon in the Solar System with a retrograde orbit, which is an orbit in the opposite direction to its planet's rotation. At 2,700 km in diameter, it is...
, largest moon of NeptuneNeptuneNeptune is the eighth and farthest planet from the Sun in the Solar System. Named for the Roman god of the sea, it is the fourth-largest planet by diameter and the third largest by mass. Neptune is 17 times the mass of Earth and is slightly more massive than its near-twin Uranus, which is 15 times... - 3.122 Mm — Diameter of EuropaEuropa (moon)Europa Slightly smaller than Earth's Moon, Europa is primarily made of silicate rock and probably has an iron core. It has a tenuous atmosphere composed primarily of oxygen. Its surface is composed of ice and is one of the smoothest in the Solar System. This surface is striated by cracks and...
, the smallest Galilean satellite of JupiterJupiterJupiter is the fifth planet from the Sun and the largest planet within the Solar System. It is a gas giant with mass one-thousandth that of the Sun but is two and a half times the mass of all the other planets in our Solar System combined. Jupiter is classified as a gas giant along with Saturn,... - 3.475 Mm — Diameter of EarthEarthEarth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...
's MoonMoonThe Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more... - 3.643 Mm — Diameter of IoIo (moon)Io ) is the innermost of the four Galilean moons of the planet Jupiter and, with a diameter of , the fourth-largest moon in the Solar System. It was named after the mythological character of Io, a priestess of Hera who became one of the lovers of Zeus....
, a moon of Jupiter - 4.821 Mm — Diameter of CallistoCallisto (moon)Callisto named after the Greek mythological figure of Callisto) is a moon of the planet Jupiter. It was discovered in 1610 by Galileo Galilei. It is the third-largest moon in the Solar System and the second largest in the Jovian system, after Ganymede. Callisto has about 99% the diameter of the...
, a moon of Jupiter - 4.879 Mm — Diameter of MercuryMercury (planet)Mercury is the innermost and smallest planet in the Solar System, orbiting the Sun once every 87.969 Earth days. The orbit of Mercury has the highest eccentricity of all the Solar System planets, and it has the smallest axial tilt. It completes three rotations about its axis for every two orbits...
- 5.150 Mm — Diameter of TitanTitan (moon)Titan , or Saturn VI, is the largest moon of Saturn, the only natural satellite known to have a dense atmosphere, and the only object other than Earth for which clear evidence of stable bodies of surface liquid has been found....
, the largest moon of Saturn - 5.262 Mm — Diameter of Jupiter's moon GanymedeGanymede (moon)Ganymede is a satellite of Jupiter and the largest moon in the Solar System. It is the seventh moon and third Galilean satellite outward from Jupiter. Completing an orbit in roughly seven days, Ganymede participates in a 1:2:4 orbital resonance with the moons Europa and Io, respectively...
, the largest moon in the solar systemSolar SystemThe Solar System consists of the Sun and the astronomical objects gravitationally bound in orbit around it, all of which formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago. The vast majority of the system's mass is in the Sun... - 6.366 Mm — Radius of EarthEarth radiusBecause the Earth is not perfectly spherical, no single value serves as its natural radius. Distances from points on the surface to the center range from 6,353 km to 6,384 km...
- 6.792 Mm — Diameter of MarsMarsMars is the fourth planet from the Sun in the Solar System. The planet is named after the Roman god of war, Mars. It is often described as the "Red Planet", as the iron oxide prevalent on its surface gives it a reddish appearance...
Distances longer than 107 m