Men's 400 IM - A Final
World Record: Leon Marchand, 4:02.50
American Record: Michael Phelps, 4:03.84
U.S. Open Record: Michael Phelps, 4:05.25
Meet Record: Leon Marchand, 4:07.80
2025 TYR Pro Swim Series Westmont:
Carson Foster, 4:09.51
2025 TYR Pro Swim Series Sacramento:
Michael Hochwalt, 4:16.88
Click on the athlete's name below to view their bio.
| Name | Prelims Time |
|---|---|
| Luke Ellis Lane 1 | 4:24.14 |
| Anthony Dornoff Lane 2 | 4:23.99 |
| Tommy Bried Lane 3 | 4:21.52 |
| Bobby Finke Lane 4 | 4:20.34 |
| Leon Marchand Lane 5 | 4:21.04 |
| Grant Sanders Lane 6 | 4:23.36 |
| Noah Cakir Lane 7 | 4:24.11 |
| Kevin Vargas Lane 8 | 4:24.17 |