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How fast is 2,400 kilometers per hour?

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It's about thirty times as fast as a Hare
In other words, the speed of a Hare is 0.03 times 2,400 kilometers per hour.
(for European Brown Hare, a.k.a. Brown Hare, a.k.a. Lepus europaeus, a.k.a. Brown Hare)
The European Hare can run at speeds of up to 72 kph. While speed is a factor in their escapes, hares evade their chief predators — wolves, foxes, and golden eagles — by fleeing in a zigzag pattern.
It's about thirty times as fast as a Greyhound
In other words, 2,400 kilometers per hour is 33.20 times the speed of a Greyhound, and the speed of a Greyhound is 0.0301 times that amount.
(a.k.a. English greyhound) (approximate maximum speed)
Greyhounds reach average race speeds of 72.4 kph. Despite their racing prowess, greyhounds are not considered energetic dogs — the typical greyhound race requires the dogs to run for less than 35 seconds.
It's about forty times as fast as Secretariat
In other words, 2,400 kilometers per hour is 39.70 times the speed of Secretariat, and the speed of Secretariat is 0.0252 times that amount.
(at Belmont Stakes, 1973)
Setting a record finish, Secretariat ran the Belmont Stakes — a 12 furlong race length — in 2:24, for an average speed of 60.4 kph in 1973. His margin of victory in the race, also a record-setter, was 31 lengths.
It's about one-sixty-fifth as fast as a Meteor
In other words, the speed of a Meteor is 63 times 2,400 kilometers per hour.
(formally Meteoroid or meteorite, depending on the context; a.k.a. "shooting star", a.k.a. "falling star")
Small meteoroids enter the Earth's atmosphere at speeds between 40,000 kph and 260,000 kph, depending on their size. The fireball effect, known as ablation, ceases once the atmosphere has slowed the meteoroid to a velocity of about 10,000 kph.
It's about 65 times as fast as Michael Johnson
In other words, 2,400 kilometers per hour is 64.410 times the speed of Michael Johnson, and the speed of Michael Johnson is 0.01553 times that amount.
(a.k.a. Michael Duane Johnson) (sprinter; 1967-) (at the Atlanta Olympics, 1996)
Setting a record that stood for 12 years, Michael Johnson ran a 200 m in 0:19.32 for an average speed of 37.27 kph at the 1996 Olympics. Johnson was nicknamed "the Man with the Golden shoes" in recognition of the custom footwear worn during these races — a pair of Nikes with a left size of 10.5 and a right size of 11.
It's about 65 times as fast as Usain Bolt
In other words, 2,400 kilometers per hour is 64.70 times the speed of Usain Bolt, and the speed of Usain Bolt is 0.0155 times that amount.
(at the Beijing Olympics, 2008) (a.k.a. Usain St. Leo Bolt, OJ, C.D.) (sprinter; 1986-)
Setting a world record, Usain Bolt ran a 100 m in 0:09.69 for an average speed of 37.2 kph at the 2008 Olympics. Furthermore, Bolt's margin of record breaking — 0.03 s — is the largest margin of victory in the history of digital measurements.
It's about 70 times as fast as Flo-Jo
In other words, 2,400 kilometers per hour is 71.130 times the speed of Flo-Jo, and the speed of Flo-Jo is 0.01406 times that amount.
(at the Seoul Olympics, 1998) (a.k.a. Florence Griffith-Joyner, a.k.a. Florence Delorez Griffith) (swimmer; 1959-1998)
Setting a world record in 1988, Flo-Jo ran a 200 m in 0:21.34 for an average speed of 33.74 kph. Known as a 200 m runner, Joyner also set a record time in a 100 m race at in 1987.