It's about one-two-hundredth as long as Daytona International Speedway
In other words, 21 meters is 0.0052195 times the length of Daytona International Speedway, and the length of Daytona International Speedway is 191.588 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 4,023.360 meters 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.
It's about one-two-hundred-fiftieth as tall as a Puncak Jaya
In other words, 21 meters is 0.004 times the height of a Puncak Jaya, and the height of a Puncak Jaya is 232.6 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 4,884 m. 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 one-two-hundred-fiftieth as tall as a Vinson Massif
In other words, 21 meters is 0.00429 times the height of a Vinson Massif, and the height of a Vinson Massif is 232.9 times that amount.(a.k.a. Mount Vinson) (Antarctica)
Mount Vinson, the highest peak of the Vinson Massif mountain, reaches 4,892 m at its peak. The mountain is named after Georgia Congressman Carl Vinson who emphatically promoted Antarctic exploration in the 1930s.
It's about one-two-hundred-fiftieth as tall as Mount Elbrus
In other words, 21 meters is 0.00372 times the height of Mount Elbrus, and the height of Mount Elbrus is 268.7 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 5,642 m 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 3,800 m.
It's about one-three-hundredth as tall as a Kilimanjaro
In other words, 21 meters is 0.0035649 times the height of a Kilimanjaro, and the height of a Kilimanjaro is 280.514 times that amount.(a.k.a. Mount Kilimanjaro) (Tanzania) (to Uhuru peak; 2008 gravimeter measurement)
Kilimanjaro rises to 5,890.79 m at its peak. An isolated peak with no surrounding mountain range, Kilimanjaro is considered the world's tallest freestanding mountain.
It's about one-three-hundredth as tall as Mount Logan
In other words, 21 meters is 0.00352 times the height of Mount Logan, and the height of Mount Logan is 283.8 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 m. 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 one-three-hundredth as tall as Denali
In other words, 21 meters is 0.00339 times the height of Denali, and the height of Denali is 294.9 times that amount.(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)
The highest mountain peak in North America, Denali's South Peak measures 6,193 m above sea level at its peak. The impetus for the name Mount McKinley was US president William McKinley of Ohio, and disputes over the which of the mountain's names should be officially recognized regularly occur between Ohio Congressmen and Alaska politicians.