By Sophie Kaufman on SwimSwam
2025 U.S. NATIONAL CHAMPIONSHIPS
Tuesday, June 3 – Saturday, June 7, 2025 Indianapolis, Indiana Indiana University Natatorium LCM (50 meters) World Championship Selection Criteria SwimSwam Preview Index Meet Central Psych Sheets Live ResultsDay 4 Prelims Heat Sheet
Happy Friday everyone, it’s time for the fourth day of the 2025 U.S. National Championships! There are just three events on the schedule this morning–the 400 freestyle, 100 breaststroke, and 100 backstroke–but there should be plenty of action. Not only is Katie Ledecky in the water for the 400 freestyle prelims and the men’s 400 freestyle field as open as ever, but the sprint breaststroke and backstroke specialists will quickly renew their rivalries from yesterday’s 50s in the 100s this morning.
Women’s 400 Freestyle — Prelims
World Record: 3:55.58 — Ariarne Titmus, Australia (2023) American Record: 3:56.46 — Katie Ledecky (2016) U.S. Open Record: 3:56.81 — Katie Ledecky, United States (2025) 2024 U.S. Olympic Trials Champion: Katie Ledecky — 3:58.35 World Aquatics ‘A’ Cut: 4:10.23Championship Final Qualifiers:
Men’s 400 Freestyle — Prelims
World Record: 3:39.96 — Lukas Märtens, Germany (2025) American Record: 3:42.78 — Larsen Jensen (2008) U.S. Open Record: 3:43.53 — Larsen Jensen, United States (2008) 2024 U.S. Olympic Trials Champion: Aaron Shackell — 3:45.46 World Aquatics ‘A’ Cut: 3:48.15Championship Final Qualifiers:
Women’s 100 Breaststroke — Prelims
World Record: 1:04.13 — Lilly King, United States (2017) American Record: 1:04.13 — Lilly King (2017) U.S. Open Record: 1:04.45 — Jessica Hardy, United States (2009) 2024 U.S. Olympic Trials Champion: Lilly King — 1:05.43 World Aquatics ‘A’ Cut: 1:06.87Championship Final Qualifiers:
Men’s 100 Breaststroke — Prelims
World Record: 56.88 — Adam Peaty, Great Britain (2019) American Record: 58.14 — Michael Andrew (2021) U.S. Open Record: 58.14 — Michael Andrew, United States (2021) 2024 U.S. Olympic Trials Champion: Nick Fink — 59.08 World Aquatics ‘A’ Cut: 59.75Championship Final Qualifiers:
Women’s 100 Backstroke — Prelims
World Record: 57.13 — Regan Smith, United States (2024) American Record: 57.13 — Regan Smith (2024) U.S. Open Record: 57.13 — Regan Smith, United States (2024) 2024 U.S. Olympic Trials Champion: Regan Smith — 57.13 World Aquatics ‘A’ Cut: 1:00.46Championship Final Qualifiers:
Men’s 100 Backstroke — Prelims
World Record: 51.60 — Thomas Ceccon, Italy (2022) American Record: 51.85 — Ryan Murphy (2016) U.S. Open Record: 51.94 — Aaron Piersol, United States (2009) 2024 U.S. Olympic Trials Champion: Ryan Murphy — 52.22 World Aquatics ‘A’ Cut: 53.94Championship Final Qualifiers:
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