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Why runway is 400 m

Li Xiao Hua2010-01-30 22:01:40 +0000 #1

Ancient wrong 2302010-01-30 22:09:23 +0000 #2
international practice
zhouyufeizyf2010-01-30 22:23:55 +0000 #3
IAAF track and field facilities of the venue provisions of the standard manual
sunnysetbill2010-01-30 23:20:35 +0000 #4
IAAF events in the development, when it took a lot of time was also designed, If 100 meters, 200 meters, 400 meters, 800 meters, 1,500 meters, 3,000 meters, 10,000 meters, etc. There are also particular about the design of the runway, and 100 meters are generally linear Road, asked the participants have good instincts, 200 meters 100 m +100 m straight corners, this event requires not only explosive power, but also requires ability to bend the coordination and endurance; Similarly two straight +2 Turn constitute the entire road is 400 meters of the , which is now a lot of lap is 400 meters from the runway, of course, usually in the road is a big soccer field within the standard football pitch size is 110 * 75 m of

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