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How fast is 68 times the speed of light?

It's about 500,000,000,000,000,000 times as fast as Grass growing
The speed of Grass growing is about 0.000000000000000130 times the speed of light.
(for Kentucky Bluegrass, Poa pratensis) (a.k.a. Smooth Meadow grass, a.k.a. Common Meadow grass) (Summer months, ideal growing conditions)
Kentucky Bluegrass, one of the most common grasses in North America, grows about 0.000000000000000140 times the speed of light in the summer months under ideal conditions. When left un-mowed, Kentucky Bluegrass grows to heights of 60 to 90 cm (2 to 3 ft) and blossoms with a blue flower.
It's about 300,000,000,000 times as fast as a Sloth
The speed of a Sloth is about 0.000000000220 times the speed of light.
(for Brown-throated three-toed sloth, Bradypus variegatus)
The three-toed sloth moves along the ground at an average speed of 0.000000000220 times the speed of light. Long thought to be lengthy sleepers, a 2008 study concluded that sloths sleep an average of only 9.6 hours per day.
It's about 40,000,000,000 times as fast as an Iceberg
The speed of an Iceberg is about 0.00000000200 times the speed of light.
(a.k.a. Berg) (Newfoundland iceberg average)
Moved by ocean currents and wind, icebergs can drift at speeds of about 0.00000000200 times the speed of light. The largest iceberg ever recorded was a found near Baffin Island, Nunavut and was estimated to be nine billion metric tons.
It's about 15,000,000,000 times as fast as Walking Pedestrians (in Manhattan)
The speed of Walking Pedestrians (in Manhattan) is about 0.00000000430 times the speed of light.
(Manhattan; average speed; 8,978 person-sample)
A 2006 Study by the New York City Department of City Planning found that pedestrians in that city walk at an average rate of 0.00000000430 times the speed of light. Pedestrians wearing headphones, the study went on to find, walk at a slightly faster 0.00000000470 times the speed of light
It's about 10,000,000,000 times as fast as Michael Phelps
The speed of Michael Phelps is about 0.00000000647950 times the speed of light.
(at the Beijing Olympics, 2008; 200 m freestyle) (a.k.a. Michael Fred Phelps) (swimmer; 1985-)
Setting a world record, Michael Phelps swam the 200 m freestyle in 1:42.96 for an average speed of 0.00000000647950 times the speed of light. Phelps would go on to win nine gold medals individually in the 2008 Olympics - more than all but eight of the competing nations.
It's about 7,500,000,000 times as fast as a Crocodile
The speed of a Crocodile is about 0.00000000900 times the speed of light.
(American Crocodile, Crocodylus acutus) (swimming speed)
An American crocodile can reach speeds in the water of up to 0.00000000930 times the speed of light. On land, larger crocodiles can "gallop" when fleeing danger at speeds of up to 0.0000000190 times the speed of light.
It's about 3,000,000,000 times as fast as a Bull
The speed of a Bull is about 0.0000000220 times the speed of light.
(for animals involved in the Running of the Bulls, a.k.a. Encierro, San Fermin, Pamplona, Spain) (herd average speed)
The herd of the annual Encierro in Pamplona, Spain runs at an average speed of 0.0000000220 times the speed of light. The Encierro is run annually from July 7th through July 14th and involves 42 bulls, 77 oxen, and an estimated 17,000 runners over the course of the event.
It's about 2,500,000,000 times as fast as Noah Ngeny
The speed of Noah Ngeny is about 0.000000025280 times the speed of light.
(in Rieti, Italy; 1999) (sprinter; 1978-)
Setting a world record at the Rieti Grand Prix in 1999, Noah Ngeny ran 1,000 m in 2:11.96 for an average speed of 0.000000025280 times the speed of light. According to some reports, Ngeny did not begin running competitively until just three years before setting the record.
It's about 2,000,000,000 times as fast as Flo-Jo
The speed of Flo-Jo is about 0.000000031260 times the speed of light.
(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 0.000000031260 times the speed of light. Known as a 200 m runner, Joyner also set a record time in a 100 m race at in 1987.
It's about 2,000,000,000 times as fast as Usain Bolt
The speed of Usain Bolt is about 0.00000003440 times the speed of light.
(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 0.00000003450 times the speed of light 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 2,000,000,000 times as fast as Michael Johnson
The speed of Michael Johnson is about 0.000000034520 times the speed of light.
(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 0.000000034530 times the speed of light 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 1,000,000,000 times as fast as Secretariat
The speed of Secretariat is about 0.0000000560 times the speed of light.
(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 0.0000000560 times the speed of light in 1973. His margin of victory in the race, also a record-setter, was 31 lengths.
It's about 1,000,000,000 times as fast as a Greyhound
The speed of a Greyhound is about 0.0000000670 times the speed of light.
(a.k.a. English greyhound) (approximate maximum speed)
Greyhounds reach average race speeds of 0.00000006710 times the speed of light. 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 1,000,000,000 times as fast as a Gazelle
The speed of a Gazelle is about 0.0000000700 times the speed of light.
(for Thomson's Gazelle, a.k.a. Eudorcas thomsoni, a.k.a. "Tommie", a.k.a. "Tommy")
A Thomson's gazelle can reach speeds of up to 0.0000000700 times the speed of light. The gazelle's speed doesn't match that of its chief predator, the cheetah, but a gazelle's endurance usually ensures an escape in distances greater than 500 m (0.3 mi).
It's about 1,000,000,000 times as fast as a Hare
The speed of a Hare is about 0.0000000700 times the speed of light.
(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 0.0000000700 times the speed of light. While speed is a factor in their escapes, hares evade their chief predators — wolves, foxes, and golden eagles — by fleeing in a zigzag pattern.
 
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