1 myriametre

To help compare different orders of magnitude this page lists lengths between 10 and 100 kilometres (10⁴ to 10⁵ metres). The myriametre (10,000 metres) is a deprecated unit name; the prefix myria- is obsolete, not included among the prefixes when the International System of Units was introduced in 1960.

Conversions

10 kilometres is equal to:

10,000 metres
6.2 miles
1 mil, unit of measure commonly used in Norway and Sweden^[1]^[2]
1 peninkulma, unit of measure commonly used in Finland; earlier peninkulma was 10.688 km.
1 farsang, unit of measure commonly used in Iran and Turkey.

18 km — cruising altitude of Concorde
18.569 km — approximately the tone that a typical CRT television emits while running (should this be kHz?)
27 km — circumference of the Large Hadron Collider, as of May 2010^[update] the largest and highest energy particle accelerator
30 km — length of the longest man made dike enclosed by water on two sides, the Afsluitdijk.
31.3 km — highest parachute jump (Joseph Kittinger)
34.668 km — highest manned balloon flight (Malcolm D. Ross and Victor E. Prather on May 4, 1961) ^[4]
38.422 km — length of the Second Lake Pontchartrain Causeway in Louisiana, US
39 km — undersea portion of the Channel tunnel
53.9 km — length of the Seikan Tunnel, as of October 2009^[update], the longest rail tunnel in the world.^[5]
77.1 km — total length of the Panama Canal

10 km — Height of Mauna Kea in Hawaii, measured from its base on the ocean floor
11 km — deepest known point of the ocean, Challenger Deep in the Mariana Trench
11 km — average height of the troposphere
21 km — length of Manhattan
23 km — depth of the largest earthquake ever recorded in the United Kingdom, in 1931 at the Dogger Bank of the North Sea
34 km — narrowest width of the English Channel at the Strait of Dover
50 km — approximate height of the stratosphere

10 km — diameter of the most massive neutron stars (3 – 5 solar masses)
13 km — mean diameter of Deimos, the smaller moon of Mars
20 km — diameter of the least massive neutron stars (1.44 solar masses)
20 km — diameter of Leda, one of Jupiter's moons
20 km — diameter of Pan, one of Saturn's moons
22 km — diameter of Phobos, the larger moon of Mars
27 km — height of Olympus Mons above the Mars reference level,^[6]^[7] the highest known mountain of the Solar System
43 km — diameter difference of Earth's equatorial bulge
66 km — diameter of Naiad, the innermost of Neptune's moons

^ Hans Högman (2007-01-21). "Measurements and weights, old Swedish". Archived from the original on 2009-04-25. http://www.algonet.se/~hogman/slmatt_eng.htm#längdmått. Retrieved 2009-04-20. "previously in common use: ... Swedish "mil" ... in the old days = ... 10.688 meters ... This "mil" was introduced in 1699 as a standard "mil" and was to represent the distance between the inns. Before 1699 the "mil" had different lengths in different parts of Sweden. Today in the metric system: 1 "mil" = 10 kilometers"
^ Haugen, Einar, Norwegian English Dictionary, 1965, Oslo: Universitetsforlaget and Madison: University of Wisconsin Press, s.v. mil
^ "IAAF Competition Rules 2008" (pdf). IAAF. pp. 195. Archived from the original on 2009-04-25. http://www.iaaf.org/mm/Document/imported/42192.pdf. Retrieved 2009-04-20.
^ Gregory Kennedy. "Stratolab, an Evolutionary Stratospheric Balloon Project". http://stratocat.com.ar/artics/stratolab-e.htm.
^ Wise, Jeff (October 2009). "Turkey Building the World's Deepest Immersed Tube Tunnel". Popular Mechanics.
^ Highest and lowest points on Mars NASA
^ Plescia, Jeff (1997-10-01). "Height of Martian vs. Earth mountains". Questions and Answers about Mars terrain and geology. http://quest.arc.nasa.gov/mars/ask/terrain-geo/Height_of_Martian_vs__Earth_mountains.txt. Retrieved 2009-04-20.