Going for school 4 hurdles record?

Sure, give it a go. But don't be too surprised if people want you to run it at the conference meet.

The rule of thumb is that your pace for 500m on the flat is about what you should be able to run for 400m over the intermediates, if you are a IH specialist.

You're not (and won't be, I gather) a 400H specialist, so the pace of your 600 might be a better guideline. And that would put you right at 55-mid for 400.

For best results, race it at least three times. And spend at least a little time working on the rhythm of 15 steps between hurdles...unless you can hurdle efficiently with left leg AND right, in which case do whatever you like.

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Separately: If you're really an 800/mile type, once you start hurdling well, someone's going to have the bright idea that you should try the steeplechase. Just sayin'.

I’ve heard the 400mh is pure hell. I know a decent hurdler and sub 1:52 guy who couldn’t break 42 in the 300.

It’s very common for people to come through 250 feeling good and absolutely die

Yep. The word "rig" (from "rigor mortis") doesn't seem to be used as often as it used to, but the concept is straightforward and understood by most. And people do rig in the 400H, partly (I think) because their stride pattern often enforces a too-fast pace in the early going.

However, there is no rig like steeplechase rig. I had a guy who went out too fast in the steeple at our tough conference meet. We had to stay over that night so he could finish.

Funnily enough, I always planned on being a steeple guy, as I did very well in XC this year, but puberty's done it's thing and my speed's kind of taken off. My coach actually doesn't want me in the steeple. I've never had a stress fracture or anything but I've had injury problems and we're both a little freaked out about the prospect. If I ever become an all american steepler I'll give this post a bump lmao

In my opinion, if you haven't tried, how do you know you can't? however, must know when to stop or continue.