Leon Marchand demolished the US Open and NCAA record in the 500 freestyle, swimming a 

<p>Leon Marchand demolished the US Open and NCAA record in the 500 freestyle, swimming a 4:02.31. For context, the NCAA record had been lowered by a total of 2.6 seconds in the last 29 years. Marchand just lowered it by 3.9 seconds.</p>

.31. For context, the NCAA record had been lowered by a total of 2.6 seconds in the last 29 years. Marchand just lowered it by 3.9 seconds.

Did Leon Marchand Hold Back in the 400 IM Final?

In the SwimSwam Podcast dive deeper into the sport you love with insider conversations about swimming. Hosted by Coleman Hodges and Gold Medal Mel Stewart, SwimSwam welcomes both the biggest names in swimming that you already know, and rising stars that you need to get to know, as we break down the past, present, and future of aquatic sports.