The world record for the men's 400 meter hurdles is held by Karsten Warholm from Norway with a time of 45.94 seconds set in 2021. Sydney McLaughlin from the USA holds the world record for the women's 400 meter hurdles with a time of 51.46 seconds set in 2021.

enough to get to the next one

There are ten hurdles in 100m, 110m and 400m hurdles races.

As many as possible. The rules are against intentionally knocking them down; if they are unintentional, it doesn't matter. The American record that Allen Johnson set was done while he hit every single hurdle

the high school high hurdles are 39 inches

lows are 33

intermediates 36

and college highs are 42

It depends on how long the track is, but on the normal 400M track, it takes a little more than four laps to make a mile (1609.344M), in lane 1.

If you use the line marked 400M in each lane, then you will also run 400M in that lane, but once you go past the common start/finish line, you are going more than 400M per lap.

The distance covered will be different depending upon whether the outside lane is the 4th lane (some practice and MS tracks), the 6th lane (some small HS tracks), the 8th lane (most HS, college and international tracks) or the 9th lane (some elite college and Olympic level international tracks).

The distance between 300 Hurdles (or 400 Hurdles) is 35 meters. The distance to the first hurdle (in high school races) is 45 meters and 10 meters from the last (8th) hurdle to the finish line. This is exactly the same as the first 300 meters of a 400 Hurdle race, though the relative position on the track is moved to finish at the common finish line. All the distances on hurdle spacing are available at: http://www.trackinfo.org/hurdles101.html

the 400m is an almost entirely anaerobic race if run competitively. This is because the body cannot adequately supply energy through the oxidative system alone. Thus the body reverts to the ATP-PcR and fast glycogen systems to produce energy more rapidly. Both of these processes produce usable energy without oxygen, thus they are anaerobic.

42 inches

I ran the middle school hurdles age 14 in about 16-17 seconds. anything over 20 is no-no land

No, that results in disqualification, and is slower than going over it. Also, a common technique is kicking down the hurdles. This usually results in disqualification at the collegiate level, but you can get away with it with under-trained officials in high school.

that time is not that great. he would need to run it in 60 to 63 seconds to compete for top 3.

Gallaudet o3o

Ed Moses set his first World Record on the 25th July 1976, bettering it in 1977, 1980 and 1983. it was finally beaten on the 6th August 1992 by Kevin Young. Ed Moses held the World Record for 17 years and 12 days. He also was unbeaten in a race for nine years, nine months and nine days.

at least 6'2"

A relay involves 4 people passing on a baton for the race (4X100, 4X400 etc.)

A dash is like a sprint and is run individually (100m 200m 400m etc.) The difference is that a relay is run with more than one person.

One is to be conserative, while th other one would require you tgo go all out.

Very fast about 17 sec, very slow is about 30-35 sec, so average about 24-25 sec.

Ten. The first hurdle is 45 meters from the start. The following nine hurdles are evenly spaced, 35 meters apart, and there is 40 meters from the last hurdle to the finish line.

39 inches is the height of Varsity 110m hurdles for men. JV is 36 inches.

The men's world record in the 400 meter dash is 43.18 seconds. The men's world record in the 400 meter hurdles is 46.78 seconds. This is a difference of 3.60 seconds. The women's world record in the 400 meter dash is 47.60 seconds. The women's world record in the 400 meter hurdles is 52.34 seconds. This is a difference of 4.74 seconds.

In the 400 meter hurdle, there are 10 hurdles. Each hurdle is 30" tall with 35m between them. There is a 45m distance before the first hurdle and a 40m distance to the finish line from the last hurdle.