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How long is 30 kilometers?
It's about one-and-one-tenth times as tall as Olympus Mons
The height of Olympus Mons is about 27 kilometers.
(a.k.a. Mount Olympus) (Mars)
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It's about two-and-a-half times as tall as Maxwell Montes
The height of Maxwell Montes is about 11 kilometers.
(Ishtar Terra, Venus)
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It's about three times as deep as The Challenger Deep (Marianas Trench)
The depth of The Challenger Deep (Marianas Trench) is about 10.9020 kilometers.
(near Marianas Islands, a.k.a. Ladrones Islands, northwestern Pacific Ocean) (depth below sea level)
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It's about one-third as long as The Panama Canal
Flag of Pamana
The length of The Panama Canal is about 88 kilometers.
(Canal de Panamá) (Panama)
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It's about three-and-a-half times as tall as a Mauna Loa
Flag of The US
The height of a Mauna Loa is about 9.1680 kilometers.
(Hawaii) (Hawaiian island volcano) (total height from seafloor)
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It's about three-and-a-half times as tall as Mount Everest
Flag of China and Flag of Nepal
The height of Mount Everest is about 8.848860 kilometers.
(a.k.a. Mount Chomolungma, a.k.a. Sagarmatha, a.k.a. Mount Qomolangma, a.k.a. सगरमाथा, a.k.a. Chajamlungma, a.k.a. ཇོ་མོ་གླང་མ, a.k.a. 珠穆朗玛峰, a.k.a. Zhūmùlǎngmǎ Fēng) (Sagarmatha Zone, Nepal and Tibet, China) (to summit, excluding snow depth)
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It's about three-tenths as wide as The English Channel
The width of The English Channel is about 107 kilometers.
(average width between Isle of Ushant and The Walde Lighthouse) (La Manche, Ärmelkanal, Mor Breizh, Mor Bretannek) (a.k.a. The Channel)
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It's about one-fourth as long as The 405
Flag of The US
The length of The 405 is about 116.540 kilometers.
(a.k.a. I-405, Interstate 405, San DIego Freeway) (Southern California)
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It's about four times as long as Calangute Beach
Flag of India
The length of Calangute Beach is about 7 kilometers.
(Goa, India) (approximate)
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It's about one-fourth as long as Hadrian's Wall
Flag of The UK
The length of Hadrian's Wall is about 120 kilometers.
(a.k.a. Roman Wall, a.k.a. The Wall, a.k.a. Vallo di Adriano, a.k.a. Vallum Aelium, a.k.a. Severus' Wall) (from North Tyneside, Tyne and Wear, England, United Kingdom to Cumbria, North West England, United Kingdom)
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It's about four-and-a-half times as tall as Aconcagua
Flag of Argentina
The height of Aconcagua is about 6.96190 kilometers.
(a.k.a. Cerro Aconcagua) (Mendoza, Argentina)
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It's about four-and-a-half times as long as The Las Vegas Strip
Flag of The US
The length of The Las Vegas Strip is about 6.80 kilometers.
(Las Vegas Boulevard S and W from Russel Rd to Sahara Ave)(Paradise, Nevada through Winchester, Nevada).
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It's about five times as tall as Denali
Flag of The US
The height of Denali is about 6.1930 kilometers.
(a.k.a. Mount McKinley, a.k.a. Doleika, a.k.a. Traleika, a.k.a. "The Great One") (Denali National Park and Preserve, Alaska) (South peak)
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It's about five times as tall as Mount Logan
Flag of Canada
The height of Mount Logan is about 5.9590 kilometers.
(Kluane National Park and Reserve, Yukon, Canada) (elevation)
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It's about five times as tall as a Kilimanjaro
Flag of Tanzania
The height of a Kilimanjaro is about 5.890790 kilometers.
(a.k.a. Mount Kilimanjaro) (Tanzania) (to Uhuru peak; 2008 gravimeter measurement)
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