The men’s 400m has been on fire at the top of 2026, and we are barely half way through the indoor season. We’ve seen multiple men dip under the 45 second barrier, an NCAA freshman take down the World U20 Record, one of the top pros possibly taking down the official world record, the 4x400m relay world record record almost broken, and a ton of depth behind them all.

Let's breakdown the current landscape of the men's 400m in 2026 so far.

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Chapters:

00:00 Intro

00:25 Khaleb McRae 400m World Record?

03:59 Christopher Morales-Williams

04:55 NCAA Indoor 400m

06:54 NCAA Indoor 4x400

07:47 Top NCAA 4x4 Splits

09:01 Summary