re: What would Usain Bolt's 40 yard dash time be?

quote:

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I don't know if even 1000 people in the world can run a 4.3.

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That's probably a good guess since only trained athletes in their prime can do this. However, I'll bet there tens of thousands of people who have (18-30 year old males), will have (under 18 males) or have had (over 30 males) the potential to run 4.3.