The length of Seikan tunnel (the 2nd longest tunnel in the world) is ...
The length of 1 Seikan tunnel (the 2nd longest tunnel in the world) is 53.85 kilometers. That is ...
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2 times bigger than distance from Tokyo to Kanagawa (1.98 to be exact).
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5 times bigger than depth of Mariana trench (4.94 to be exact).
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6 times bigger than Mt. Everest (6.09 to be exact).
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14 times bigger than Akashi-Kaikyo bridge (the longest suspension bridge in the world) .
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55 times bigger than Angel fall (the highest waterfall in the world) .
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83 times bigger than Warsaw radio tower .
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95 times bigger than lowest frequency wavelength of AM radio .
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252 times bigger than depth of human dive .
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6,017 times bigger than world record of long jump .
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67,312 times bigger than Japanese sword .
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1,077,000 times bigger than length of the Tokyo shrew (smallest mammal in existence) .
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7,066,929 times bigger than diameter of bullet .
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53,850,000 times bigger than length of lice .
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673,125,000 times bigger than diameter of hair .
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2,692,500,000 times bigger than diameter of wool fiber .
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53,850,000,000 times bigger than diameter of the largest virus .
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1,538,571,428,571 times bigger than diameter of bacterial flagella .
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2 times smaller than distance from Osaka to Tokushima (2.08 to be exact).
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3 times smaller than distance from Osaka to Fukui (3.08 to be exact).
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5 times smaller than distance from Tokyo to Gifu (5.04 to be exact).
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6 times smaller than distance from osaka to Nagano (6.03 to be exact).
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7 times smaller than distance from Osaka to Yamaguchi (6.99 to be exact).
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8 times smaller than distance from Osaka to Chiba (8.01 to be exact).
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9 times smaller than distance from Osaka to Fukuoka (9.02 to be exact).
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21 times smaller than distance from Paris to Rome .
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40 times smaller than distance from Tokyo to Taipei .
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53 times smaller than distance from Sao Paulo to Santiago .
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75 times smaller than distance from New York to Los Angeles .
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93 times smaller than distance from Cape Town to Nairobi .
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764 times smaller than equator .
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88,545 times smaller than diameter of the Sun .
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380,394 times smaller than distance that light travels in 1 minute .
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8,709,216 times smaller than distance to the Sun .
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21,469,193 times smaller than distance that light travels in 1 hour .
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248,687,658 times smaller than diameter of Pluto .
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6,466,489,496 times smaller than distance that light travels in a day .
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419,418,345,005 times smaller than distance that light travels in a year .
