It's about 1,000 times as tall as Mount Logan
In other words, 6,400 kilometers is 1,074 times the height of Mount Logan, and the height of Mount Logan is 0.000931 times that amount.(Kluane National Park and Reserve, Yukon, Canada) (elevation)
The highest mountain in Canada, Mount Logan has a total height of 5.960 kilometers. The high altitude and northern latitude of the mountain resulted in one-time temperature of -77.5 °C — the lowest temperature ever recorded outside of Antarctica.
It's about 1,000 times as tall as a Kilimanjaro
In other words, 6,400 kilometers is 1,086.44 times the height of a Kilimanjaro, and the height of a Kilimanjaro is 0.00092044 times that amount.(a.k.a. Mount Kilimanjaro) (Tanzania) (to Uhuru peak; 2008 gravimeter measurement)
Kilimanjaro rises to 5.890790 kilometers at its peak. An isolated peak with no surrounding mountain range, Kilimanjaro is considered the world's tallest freestanding mountain.
It's about 1,000 times as tall as Mount Elbrus
In other words, 6,400 kilometers is 1,134 times the height of Mount Elbrus, and the height of Mount Elbrus is 0.000882 times that amount.(a.k.a. Mingi Tau, a.k.a. Эльбрус, a.k.a. იალბუზი) (Karachay-Cherkessia and Kabardino-Balkaria, Russia) (west summit)
The west summit of the dual-summit volcano Mount Elbrus is 5.6420 kilometers at its peak and is the highest peak in both Russia and the European continent. Until 1976, a cable car would take visitors to the mountain as far up as the Garabashi camp, located at an elevation of 3.80 kilometers.
It's about 1,500 times as tall as a Vinson Massif
In other words, 6,400 kilometers is 1,308 times the height of a Vinson Massif, and the height of a Vinson Massif is 0.000765 times that amount.(a.k.a. Mount Vinson) (Antarctica)
Mount Vinson, the highest peak of the Vinson Massif mountain, reaches 4.8920 kilometers at its peak. The mountain is named after Georgia Congressman Carl Vinson who emphatically promoted Antarctic exploration in the 1930s.
It's about 1,500 times as tall as a Puncak Jaya
In other words, 6,400 kilometers is 1,310 times the height of a Puncak Jaya, and the height of a Puncak Jaya is 0.000763 times that amount.(a.k.a. Mt. Carstensz, a.k.a. Carstensz Pyramid, a.k.a. Nemangkawi, a.k.a. Carstensz Toppen, a.k.a. Gunung Sukarno) (Papua province, Indonesia)
The highest point in Oceania (and therefore one of the seven summits) peak of Puncak Jaya is 4.8840 kilometers. Dutch explorer Jan Carstenszoon, the mountain's namesake, is said to have been ridiculed for claiming to have seen snow near the equator when he reported his discovery of the peak in 1623.
It's about 1,500 times as long as The Indianapolis Motor Speedway
In other words, 6,400 kilometers is 1,590.71 times the length of The Indianapolis Motor Speedway, and the length of The Indianapolis Motor Speedway is 0.0006287 times that amount.(Speedway, Indiana) (rectangular oval course)
The rectangular oval course of the Indianapolis Motor Speedway is 4.02336 km. While famous for its automotive racing, the first motorsport held at the track was a series of motorcycle races in August, 1909 — a little less than two years before the inaugural Indianapolis 500 race was run.
It's about 1,500 times as long as Daytona International Speedway
In other words, 6,400 kilometers is 1,590.71 times the length of Daytona International Speedway, and the length of Daytona International Speedway is 0.0006287 times that amount.(Daytona Beach, Florida) (tri-oval course)
The tri-oval course of the Daytona International Speedway, upon which the NASCAR Daytona 500 is run, is 4.02336 km in length. Although the tri-oval design is said to allow for greater visibility during the race, the real reason for the then-unique design was that plot available for construction of the track was only 350 acres and could not accommodate a traditional oval layout of appropriate length.