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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55 times bigger than Angel fall (the highest waterfall in the world) .
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65 times bigger than Burj Khalifa (the highest building in the world) .
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83 times bigger than Warsaw radio tower .
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621 times bigger than world record of hammer throw .
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10,160 times bigger than height of giraffe .
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67,312 times bigger than Japanese sword .
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179,624 times bigger than distance that light travels in 1 nanosecond .
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10,770,000 times bigger than length of red ant .
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107,700,000 times bigger than diameter of ovum .
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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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76,928,571,429 times bigger than red light wavelength .
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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 Danyang–Kunshan Grand Bridge (the longest bridge in the world) (3.06 to be exact).
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5 times smaller than distance from Osaka to Shizuoka (4.9 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 Gunma (6.92 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 Ibaraki (8.97 to be exact).
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14 times smaller than distance from osaka to Iwate .
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32 times smaller than distance from Sao Paulo to Buenos Aires .
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42 times smaller than distance from Hokkaido to Okinawa .
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60 times smaller than distance from Sao Paulo to Santiago .
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74 times smaller than distance from New York to Los Angeles .
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732 times smaller than altitude of GPS satellite .
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4,874 times smaller than diameter of Jupiter .
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80,562 times smaller than diameter of the Sun .
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547,443 times smaller than distance that light travels in 1 minute .
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1,624,510 times smaller than distance to Mars .
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64,795,546 times smaller than diameter of Saturn .
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674,759,306 times smaller than distance that light travels in a day .
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901,531,417,536 times smaller than diameter of Pleiades .
