400 meter low hurdles. Toughest sprint in track.

Fine - "arguably" the toughest sprint race in track and field. I should know - I ran it for four years in high school (high hurdles as well). Keep in mind - you not only have to sprint one lap BUT you have to clear 10 hurdles with finesse and speed...as if the hurdles aren't there.

The track record at this invitational (400 meters) - the 2009 Prefontaine Classic - is 47.91 by Bershawn Jackson, USA, 2005. We didn't have meters when I was in high school; it was 330 yard low hurdles. My time? 39.6 (without enhancing performance drugs like Marion Jones or Ben Johnson). All-county, all-conference my senior year. That's fast. I beat black guys from Racine Park, Case and Horlick. And that time is still competitive by today's high school standards in Wisconsin.

I'd have to run roughly another 109 yards to equal 400 meters. 47.91 is smoking.