To help compare orders of magnitude; this page lists lengths between 100 and 1,000 km (10⁵ and 10⁶ m). An order of magnitude is the class of scale or magnitude of any amount, where each class contains values of a fixed ratio to the class preceding it. ... In general English usage, length (symbols: l, L) is but one particular instance of distance – an objects length is how long the object is – but in the physical sciences and engineering, the word length is in some contexts used synonymously with distance. Height is vertical distance; width (or breadth... A kilometre (American spelling: kilometer), symbol: km is a unit of length in the metric system equal to 1000 metres (from the Greek words χίλια (khilia) = thousand and μέτρο (metro) = count/measure). ... The metre, or meter (symbol: m) is the SI base unit of length. ...

Distances shorter than 100 km To help compare different orders of magnitude this page lists lengths between 10 and 100 km (104 to 105 m). ...

Conversions

100 km is equal to:

• 62 miles
• side of square with area 10,000 km²
• radius of circle with area 31,416 km²

A mile is any of several units of distance, or, in physics terminology, of length. ... In plane geometry, a square is a polygon with four equal sides and equal angles. ... To help compare orders of magnitude of different geographical regions, we list here areas between 10,000 km² and 100,000 km². See also areas of other orders of magnitude. ... Square kilometre (US spelling: Square kilometer), symbol km², is an SI unit of surface area. ... Jump to: navigation, search In Euclidean geometry, a circle is the set of all points at a fixed distance, called the radius, from a fixed point, called the centre (center). ...

Human-built structures

• 108 km — length of the Channel Tunnel Rail Link
• 130 km — range of a Scud-A missile
• 213 km — length of Paris Métro
• 223 km — length of the Madrid Metro
• 300 km — range of a Scud-B missile
• 386 km — altitude of the International Space Station
• 408 km — length of the London Underground (active track)
• 470 km — distance from Dublin to London as the crow flies
• 500 km — widest width of Sweden from east to west
• 550 km — distance from San Francisco to Los Angeles as the crow flies
• 590 km — length of land boundary between Finland and Sweden
• 600 km — range of a Scud-C missile
• 600 km — height above ground of the Hubble Space Telescope
• 871 km — distance from Sydney to Melbourne (along the Hume Highway)

A Eurostar train on the CTRL, near Ashford Model showing the current redevelopment of the Kings Cross area with the Channel Tunnel Rail Link terminal behind the barrel-vaulted St Pancras Station on the left. ... Polish missile wz. ... Paris Art Nouveau Metro sign The Paris Métro is the metro (underground) system in Paris, France. ... The Madrid Metro is the large metro system serving Madrid, the capital of Spain. ... Polish missile wz. ... Jump to: navigation, search ISS Statistics Crew: 2 As of August 21, 2005 Perigee: 352. ... -1... Jump to: navigation, search Dublin (Irish: Baile Átha Cliath), is the capital and largest city of the Republic of Ireland, located near the midpoint of Irelands east coast, at the mouth of the River Liffey and at the centre of the Dublin region. ... London is the capital city of the United Kingdom and of England. ... As the crow flies is a colloquial term used to describe the most direct route between two points on the Earth. ... This page is a candidate for speedy deletion. ... Jump to: navigation, search The City of Los Angeles (from Spanish Los Ángeles , meaning the angels), also known as L.A., is the second-largest city in the United States in terms of population, as well as one of the worlds most important economic, cultural, and entertainment centers. ... As the crow flies is a colloquial term used to describe the most direct route between two points on the Earth. ... Polish missile wz. ... Jump to: navigation, search The Hubble Space Telescope is a telescope in orbit around the Earth. ... Jump to: navigation, search Sydney is the capital city of the Australian state of New South Wales and Australias largest and oldest city (founded in 1788). ... Jump to: navigation, search Melbourne is the capital and largest city of the state of Victoria, and the second largest city in Australia (after Sydney), with a population of 3. ... Jump to: navigation, search The Hume Highway (also known as the Hume Freeway) is one of the most important roads in Australia, linking the countrys two largest cities - Sydney and Melbourne. ...

Nature

• 203 km — length of Sognefjorden, the largest fjord in the world
• 240 km — widest width of the English Channel
• 430 km — length of the Pyrenees
• 724 km — length of the Om River

An arm of the Sognefjord Sognefjorden (or Sognefjord, the suffix -en is a form of the definite article in the Norwegian language) is the second largest fjord in the world after Scoresby Sund on Greenland, and the largest in Norway. ... Jump to: navigation, search Satellite view of the English Channel The English Channel, also for some time known as the British Sea (French: La Manche, the sleeve) is the part of the Atlantic Ocean that separates the island of Great Britain from northern France, and joins the North Sea to... Jump to: navigation, search Central Pyrenees The Pyrenees (French: Pyrénées; Spanish: Pirineos; Occitan: Pirenèus or Pirenèas; Catalan Pirineus; Aragonese: Perinés; Basque: Pirinioak) are a range of mountains in southwest Europe that form a natural border between France and Spain. ... Om (Омь) is a river in the south of Western Siberian plains in Russia. ...

Astronomical

• 167 km — diameter of Amalthea, one of Jupiter's inner moons
• 217 km — length of the Grand Union Canal
• 220 km — diameter of Phoebe, the largest of Saturn's outer moons
• 340 km — diameter of Nereid, the third largest moon of Neptune
• 420 km — diameter of Proteus, the second largest moon of Neptune
• 468 km — diameter of the asteroid 4 Vesta
• 472 km — diameter of Miranda, one of Uranus' major moons

Atmospheric pressure 0 kPa Amalthea (IPA: , am-ul-thee-a, Greek Αμάλθεια) is the third moon of Jupiter (in order of distance from the planet), and the fifth in order of discovery, hence its Roman numeral designation of Jupiter V. It was discovered on September 9, 1892 by Edward Emerson Barnard... Atmospheric characteristics Atmospheric pressure 70 kPa Hydrogen ~86% Helium ~14% Methane 0. ... The canal at Braunston The Grand Union Canal is a canal in England and part of the British canal system. ... For other meanings see Phoebe. ... Atmospheric characteristics Atmospheric pressure 140 kPa Hydrogen >93% Helium >5% Methane 0. ... Voyager 2 view of Nereid. ... Atmospheric characteristics Surface pressure ≫100 MPa Hydrogen - H2 80% ±3. ... Proteus (proe-tee-us, Greek Πρωτέας) is one of Neptunes moons. ... Atmospheric characteristics Surface pressure ≫100 MPa Hydrogen - H2 80% ±3. ... Jump to: navigation, search An asteroid is a small, solid object in our Solar System, orbiting the Sun. ... 4 Vesta (ves-ta) is the third-largest asteroid in the Main belt, between 530 and 468 km in diameter. ... Atmospheric pressure 0 kPa Miranda (mi-ran-da) is the smallest and innermost of Uranus major moons. ... Atmospheric characteristics Atmospheric pressure 120 kPa Hydrogen 83% Helium 15% Methane 1. ...

Misc

• 100 km — the altitude at which the FAI defines spaceflight to begin
• 350 km — lower bound of Low Earth orbit

Distances longer than 1,000 km The Fédération Aéronautique Internationale (FAI) is a standard setting and record-keeping body for aeronautics and astronautics. ... Space exploration is the physical exploration of outer-Earth objects and generally anything that involves the technologies, science, and politics regarding space endeavors. ... A low Earth orbit (LEO) is an orbit in which objects such as satellites are below intermediate circular orbit (ICO) and far below geostationary orbit, but typically around 350 - 1400 km above the Earths surface. ... To help compare different orders of magnitude this page lists lengths between 106 and 107 m (1,000 and 10,000 km). ...

See also

• Orders of magnitude (length)