Re: 400m time guidelines
if you're doing multiple 400s, then obvioulsy the time will go up. At one point me and my 4x400m relay team (when I was a junior in high school) set the school record and went to the State Open meet. Practice for that was that we all had to run 6 400s in under 60 seconds (though by the end we were just barely able to do that). So if you're doing around 6 of them, expect your times to go up 7 - 10 seconds (which is a LOT of time in a 400).