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• Distances shorter than 10 km
• 10 km is equal to:
  • 10,000 metres
  • 6.2 miles
  • 1 mil, unit of measure commonly used in Norway and Sweden
  • 1 farsang, unit of measure commonly used in Iran and Turkey
• 11.034 km -- deepest known point of the ocean, Challenger Deep in the Mariana Trench.
• 13 km -- mean diameter of Deimos, the smaller moon of MarsMars is the fourth planet from the Sun in the solar system, named after the Roman god of war (the counterpart of the Greek Ares), on account of its blood red color as viewed in the night sky. Mars has two small moons, Phobos and Deimos, both small and odd
• 16 km -- diameter of AdrasteaAdrastea ("a DRAS tee a") is the second of Jupiter's known moons (counting outward from the planet). It was discovered on Voyager 2 probe photographs taken in 1979 and received the designation S/1979 J 1 after the discovery had been announced in Science (, one of Jupiter's inner moons
• 18 km -- cruising altitude of ConcordeThe Aerospatiale- BAC Concorde supersonic transport (SST) was one of only two supersonic passenger airliners to have seen commercial service. Concorde had a cruising speed of Mach 2. 04 and a cruise altitude of 56,000 feet ( 17,000 metres) with a delta wi
• 20 km -- diameter of LedaLeda (pronounced "LEE da") is a satellite of Jupiter that was discovered by Charles T. Kowal at the Mount Palomar Observatory on September 14, 1974, right after three nights' worth of photographic plates had been taken ( September 11 through 13; Leda appe, one of Jupiter's moons
• 20 km -- diameter of PanPan ("PAN") is a moon of Saturn, named after the god Pan. It was discovered by Mark R. Showalter in 1990 from analysis of old Voyager probe photos. Pan is within the Encke division in Saturn's A Ring; it acts as a shepherd and is responsible for keeping t, one of SaturnSaturn is the sixth planet from the Sun. It is a gas giant, the second-largest planet in the solar system after Jupiter. It was named after the Roman god Saturn. Its symbol is a stylized representation of the god's sickle ( Unicode: ♄). Physical ch's moons
• 21 km -- length of Manhattan
• 22 km -- mean diameter of Phobos, the larger moon of Mars
• 30 km -- diameter of Ananke, one of Jupiter's outer moons
• 32 km -- diameter of Siarnaq, one of Saturn's outer moons
• 34 km -- Narrowest width of the English Channel
• 36 km -- diameter of Lysithea, one of Jupiter's moons
• 38.422 km -- Length of the world's longest bridge, the Second Lake Pontchartrain Causeway in Louisiana, USA
• 39 km -- undersea portion of the Channel tunnel
• 42.195 km -- length of a marathon course
• 43 km -- diameter difference of Earth's equatorial bulge
• 43 km -- diameter of Metis, Jupiter's innermost moon
• 46 km -- diameter of Carme, one of Jupiter's outer moons
• 60 km -- diameter of Pasiphaë, one of Jupiter's outer moons
• 66 km -- diameter of Naiad, the innermost of Neptune's moons
• 86 km -- diameter of Elara, one of Jupiter's moons
• 99 km -- diameter of Thebe, one of Jupiter's inner moons
• Distances longer than 100 km

See also: conversion of units