Carson Foster Bests Michael Phelps’ 15-16 400 IM NAG Record in Fiji

In prelims of the 400 IM Friday morning at the 2018 Jr. Pan Pacific Championships, 16-year-old Carson Foster took almost three tenths off Michael Phelps‘ 15-16 National Age Group record in the 400 IM.

Foster, who bested Caeleb Dressel‘s 200 free 15-16 NAG Thursday, split 57.02/1:03.52/1:14.08/1:00.30 to win the race in 4:14.92. Phelps’ previous record was 4:15.20, set in 2001. Phelps now only holds one 15-16 NAG: his 1:54.58 200 fly, also from 2001.

We were unable to locate Phelps’ splits from the 2001 US Spring National Championships anywhere. If you have them, please send to [email protected], and we’ll compare them with Foster’s.

Foster’s previous best time was from U.S. Summer Nationals in 2017, where he went 4:21.10.

The Texas commit is the top qualifier in the event by over five seconds, with Japan’s Masayuki Otake and Keiya Tamaru tied for second in 4:20.23. In fourth was Carson’s older brother Jake Foster in 4:21.29.

Top 10 All-Time: US Boys 15-16 400 IM

1 Carson Foster 4:14.92
2 Michael Phelps 4:15.20
3 Sean Grieshop 4:15.67
4 Gunnar Bentz 4:17.43
5 Jake Foster 4:19.40
6 Marci Barta 4:19.47
7 Andrew Seliskar 4:20.96
8 Jarod Arroyo 4:20.96
9 Robert Finke 4:21.04
10 Mikey Calvillo 4:22.09

Race Video:

In This Story

Leave a Reply

15 Comment threads
33 Thread replies
Most reacted comment
Hottest comment thread
33 Comment authors
newest oldest most voted
Caeleb Dressel Will Win 9 Gold Medals in Tokyo



Urlando went a 4:18 and would have moved to 5th all-time but he got DQed. Hopefully he puts together a fast and clean 200 IM.


Why does he keep getting DQ? He did in his 200 IM at nationals.


Any idea why he got DQed?

Swammer from Wakanda

False start I think


Oof that’s the worst way to get deeked in a 4 IM

He was DQ’ed for not finishing on his back.


The announcer said disqualification for lane 7 of heat 3 for shoulders past vertical at the backstroke finish, is that urlando?


The US production lines continues.

About Torrey Hart

Torrey Hart

Torrey is from Oakland, CA, and majored in media studies and American studies at Claremont McKenna College, where she swam distance freestyle for the Claremont-Mudd-Scripps team. Outside of SwimSwam, she has bylines at Sports Illustrated, Yahoo Sports, SB Nation, and The Student Life newspaper.

Read More »

Want to take your swimfandom to the next level?

Subscribe to SwimSwam Magazine!