Out of the blocks, how hard do you run the first part of your 400 meters?
I usually run 40 meters, then relax. For younger athletes, I put a piece of tape and tell them to drive hard (but relaxed) until they hit that mark, then relax and fast until the straightaway where you can start to “float”.
Clyde Hart suggests to drive the first 60 meters hard.
[For more information, see How do you lose a 400m race?]
At the 2013 IAAF World Youth Championships in Donetsk, Martin Manley of Jamaica ran and won in 45.89… and it wasn’t until the last 60 meters when he made his move over the American. In fact, he ran a full 1 second PB since Champs in March.
Martin said in his post race interview that he executed the first 60, last 60 very well, meaning he drove out of the blocks and made a final push over the last 60 meters.
Great piece of advice, but don’t forget the middle 280 meters!