By Anya Pelshaw on SwimSwam
2025 U.S. OPEN
December 3-6, 2025 Austin, Texas Lee and Joe Jamail Texas Swimming Center Prelims: 10 a.m. EST Finals: 7 p.m EST (Day 1: 5 p.m. EST) LCM (50 meters) Meet Central Psych Sheets Live Results Live Recaps Finals: Day 1| Day 2 | Day 3 Prelims: Day 2 | Day 3MEN’S 400 IM – Finals
World Record: 4:02.50, Leon Marchand (FRA) – 2023 U.S. Open Record: 4:05.25, Michael Phelps (USA) – 2008 U.S. Open Meet Record: 4:10.09, Chase Kalisz (USA) – 2022 Texas Pool Record: 4:08.46, Carson FosterTop 8 Finishers
Carson Foster (UN-MR) – 4:07.02 CR Luka Mijatovic (PLS) – 4:15.91 Baylor Nelson (TEX) – 4:15.91 Cooper Lucas (TEX) – 4:16.60 Tommy Bried (UOFL) – 4:18.65 Tristan Jankovics (OSU) – 4:19.02 Bobby Finke (SPA-FL) – 4:19.02 Gregg Enoch (UOFL) – 4:24.80Carson Foster swam to a new US Open Meet record posting a 4:07.02 in the men’s 400 IM. That also marked his 2nd fastest swim ever, only behind his best time of a 4:06.52 that he swam to win silver at the 2022 and 2023 World Championships .
Foster broke the previous US Open meet record of a 4:10.09 that Chase Kalisz set in 2022.
Split Comparison
Distance (m) Foster 2025 US Open Kalisz 2022 US Open Foster 2022 Worlds 50 25.76 25.76 26.31 26.31 25.86 25.86 100 29.47 55.23 30.24 56.55 29.56 55.42 150 32.01 1:27.24 32.42 1:28.97 31.78 1:27.20 200 31.12 1:58.36 31.87 2:00.84 30.98 1:58.18 250 35.32 2:33.68 34.66 2:35.50 34.66 2:32.84 300 35.62 3:09.30 35.19 3:10.69 35.66 3:08.50 350 29.99 3:39.29 30.69 3:41.38 29.58 3:38.08 400 27.73 4:07.02 28.71 4:10.09 28.48 4:06.56Compared to Kalisz, Foster was faster today on the fly, back, and free legs of the race. Kalisz was faster on the breaststroke leg in 2022. Foster was less than half a second off his lifetime best in the 400 IM, with the biggest difference coming on the backstroke leg where he was slower today than three years ago.
Foster notably did not compete in the 400 IM this past summer at the 2025 World Championships as he scratched the event due to an ankle injury that he suffered before finals of the 200 IM. He was the #3 seed heading into the 400 IM at 2025 Worlds and his time from today would have won silver.
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