
It's about 250,000,000 times as fast as Grass growing.
In other words, the speed of Grass growing is 0.00000000380 times 678 yards per minute.
(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 0.00000280 yards per minute in the summer months under ideal conditions. When left unmowed, Kentucky Bluegrass grows to heights of 60 to 90 cm (2 to 3 ft) and blossoms with a blue flower.
It's about 150 times as fast as a Sloth.
In other words, the speed of a Sloth is 0.0067 times 678 yards per minute.
(for Brownthroated threetoed sloth, Bradypus variegatus)The threetoed sloth moves along the ground at an average speed of 4.40 yards per minute. 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 twenty times as fast as an Iceberg.
In other words, the speed of an Iceberg is 0.05 times 678 yards per minute.
(a.k.a. Berg) (Newfoundland iceberg average)Moved by ocean currents and wind, icebergs can drift at speeds of about 30 yards per minute. The largest iceberg ever recorded was a found near Baffin Island, Nunavut and was estimated to be nine billion metric tons.
It's about eight times as fast as Walking Pedestrians (in Manhattan).
In other words, 678 yards per minute is 7.90 times the speed of Walking Pedestrians (in Manhattan), and the speed of Walking Pedestrians (in Manhattan) is 0.130 times that amount.
(Manhattan; average speed; 8,978 personsample)A 2006 Study by the New York City Department of City Planning found that pedestrians in that city walk at an average rate of 85 yards per minute. Pedestrians wearing headphones, the study went on to find, walk at a slightly faster 93 yards per minute
It's about fiveandahalf times as fast as Michael Phelps.
In other words, 678 yards per minute is 5.31930 times the speed of Michael Phelps, and the speed of Michael Phelps is 0.187990 times that amount.
(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 127.460 yards per minute. 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 four times as fast as a Crocodile.
In other words, 678 yards per minute is 3.80 times the speed of a Crocodile, and the speed of a Crocodile is 0.260 times that amount.
(American Crocodile, Crocodylus acutus) (swimming speed)An American crocodile can reach speeds in the water of up to 180 yards per minute. On land, larger crocodiles can "gallop" when fleeing danger at speeds of up to 360 yards per minute.
It's about oneandahalf times as fast as a Bull.
In other words, the speed of a Bull is 0.670 times 678 yards per minute.
(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 440 yards per minute. The Encierro is run annually from July 7^{th} through July 14^{th} and involves 42 bulls, 77 oxen, and an estimated 17,000 runners over the course of the event. 
