By Madeline Folsom 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 Prelims: Day 2 Finals: Day 1Day 2 Finals Heat Sheet
Yesterday’s U.S. Open finals were exciting, and the top swim of the night came from Summer McIntosh setting the 2nd fastest 400 freestyle time in history to win the event and set a new U.S. Open Record.
If you missed the action, you can watch all the race videos courtesy of NBC Sports below.
Women’s 50 Backstroke – Finals
World Record: 26.86 – Kaylee McKeown, Australia (2023) U.S. Open Record: 26.97 – Katharine Berkoff, USA (2025) Meet Record: 27.49 — Katharine Berkoff, 2025Top 8
Katharine Berkoff (WOLF) – 27.28 *Meet Record Regan Smith (TXLA) – 27.52 Ingrid Wilm (CAN) – 27.87 Leah Shackley (NCS) – 27.88 Kaitlyn Owens (TAMU) – 28.06 Erika Pelaez (NCS) – 28.11 Phoebe Bacon (WISC) – 28.15 Mary-Sophie Harvey (CAN) – 28.34World Champion Katharine Berkoff won the women’s 50 backstroke final by almost three tenths over Regan Smith, touching in a new meet record time of 27.28, beating the 27.49 she swam in prelims.
Regan Smith finished 2nd in 27.52, coming in three tenths ahead of Canada’s Ingrid Wilm. They both added about half-a-second with Smith adding from her best of 27.10 and Wilm was off her best of 27.37 from May of 2023.
NC State’s Leah Shackley finished 4th in 27.88 to be the last swimmer under 28 seconds in the event, adding from her best of 27.31 that she swam at the World University Games last summer.
Men’s 50 Backstroke – Finals
World Record: 23.55 – Kliment Kolesnikov, Russia (2023) U.S. Open Record: 23.71 – Hunter Armstrong, USA (2022) Meet Record: 24.70 — Henry Allan, 2025Top 8 Finishers
Shaine Casas (TXLA) — 24.53 *Meet Record Henry Allan (SVA) — 24.65 Hubert Kos (TXLA) — 24.74 Ivan Tarasov (AU) — 24.86 Jack Aikins (UVA) — 25.18 Sam Lorenz (UN)- 25.29 Bjoern Kammann (TNAQ) — 25.44 Daniel Diehl (NCS) — 25.58Shaine Casas came out on top of the men’s 50 backstroke final, swimming 24.53 after swimming on top of the lane rope for the majority of the race. His best time in the event stands at 24.00 from the International Team Trials in April of 2022.
Australian 17-year-old Henry Allan finished 2nd in 24.65, coming in five hundredths faster than his prelims time of 24.70 and beating Hubert Kos‘s 24.74 for the silver medal. Kos was only two tenths off his lifetime best of 25.40 from the World Championships last summer.
Ivan Tarasov was 4th at 24.86 to finish 4th, a new best time for him, dropping from the 25.07 he swam in April of 2024.
Women’s 400 Freestyle – Finals
World Record: 3:54.18 – Summer McIntosh, Canada (2025) U.S. Open Record: 3:56.81 – Katie Ledecky, USA (2025) Meet Record: 3:59.42 – Summer McIntosh, 2023Top 8 Finishers
Summer McIntosh (TXLA) — 3:55.37 **U.S. Open Record Anna Peplowski (ISC) — 4:10.55 Emma Weyant (GSC) — 4:11.25 Mila Nikanorov (OSU) — 4:11.91 Chloe Stepanek (LIAC) — 4:15.36 Alex Siegel (LIAC) — 4:14.55 Erin Gemmell (TEX) — 4:16.54 Leticia Fassina Romao (UOFL) — 4:17.73Summer McIntosh required no transition period to get used to her new training program with Bob Bowman at the University of Texas, swimming a monster 3:55.37 to break Katie Ledecky‘s U.S. Open Record and swimming the 2nd fastest 400 freestyle in history, only behind her own World Record.
The ‘A’ final was the Summer McIntosh show with her getting out to a dominant lead very early in the race, turning more than three seconds ahead of the rest of the field at the 100 mark with her 56.42 split.
She was 59.89/1:00.09/58.97 on the rest of the 100 splits to earn a dominant victory, coming in more than 15 seconds ahead of 2nd place finisher Anna Peplowski from Indiana.
She now holds the top two swims in history with Ariarne Titmus’ former World Record of 3:55.38 dropping to 3rd. She also takes down Ledecky’s former U.S. Open record of 3:56.81 from the Fort Lauderdale stop of the Pro Swim Series in May of this year where McIntosh finished 2nd.
Peplowski was just off her best of 4:09.20 from the 2024 U.S Olympic Team Trials.
Emma Weyant finished 3rd in 3:11.25, three seconds off her best 4:09.07 from August of 2019.
Men’s 400 Freestyle – Finals
World Record: 3:39.96 – Lukas Martens, Germany (2025) U.S. Open Record: 3:43.33 – Rex Maurer, USA (2025) Meet Record: 3:45.63 – Zane Grothe, 2016Top 8 Finishers
Leon Marchand (TXLA) — 3:44.70 *Meet Record Luka Mijatovic (PLS) — 3:45.30 Carson Foster (UN) — 3:45.73 Luke Hobson (NYAC) — 3:45.85 Aaron Shackell (IU) — 3:47.93 Ilia Sibirtsev (UZB) — 3:48.98 Luke Whitlock (IU) — 3:48.99 Jordi Vilchez (OSU) — 3:51.49The lead changed hands a few times during that race, but Leon Marchand earned the win and meet record, touching in 3:44.70 to come in six tenths ahead of Luka Mijatovic.
Marchand’s swim was a new lifetime best time, dropping four seconds from the 3:48.62 he swam in May of this year. He sat in 2nd for the middle 200 of the race behind Aaron Shackell who was out in 1:50.65, more than half-a-second faster than Marchand’s 1:51.24.
He came back really strong, splitting 57.40/56.06 on his final two 100s to take back the lead and set a new meet record.
Luka Mijatovic swam 3:45.30 to finish 2nd, breaking his own NAG record time of 3:45.71 from the 2025 U.S. Nationals earlier this year. He will move up to the 13th fastest performer in American history, jumping Jake Mitchell’s 3:45.38.
Carson Foster was 3rd in 3:45.73, just off his lifetime best of 3:45.29 from the 2022 Speedo Sectionals in Austin.
Luke Hobson was 4th in 3:45.85, dropping nearly two seconds from the 3:47.47 mark he swam in June of this year, and he will move up to the #17 spot in the all-time American rankings.
Women’s 200 IM – Finals
World Record: 2:05.70 – Summer McIntosh, Canada (2025) U.S. Open Record: 2:06.79 – Kate Douglass, USA (2024) Meet Record: 2:08.20 – Melanie Margalis, 2019Top 8 Finishers
Kate Douglass (NYAC) – 2:07.85 *Meet Record Alex Walsh (NYAC) – 2:09.18 Mary-Sophie Harvey (CAN) – 2:09.19 Phoebe Bacon (WISC) – 2:10.22 Tara Kinder (SVA) – 2:12.23 Rosie Murphy (UCLA) – 2:12.50 Alex Shackell (CSC-IN) – 2:14.39 Isabella Boyd (SVA) – 2:15.09Five events and five meet records so far on day 2. Kate Douglass won the women’s 200 IM in 2:07.85, coming in about half-a-second under Melanie Margalis’ 2019 meet record time of 2:08.20.
She won by more than a second over teammate Alex Walsh, after leading three of the four 50s of the race. She started out with the fastest fly split, coming in at 26.92 to sit three tenths ahead of Wisconsin’s Phoebe Bacon, who was 27.29 for 2nd.
The backstroke leg saw Bacon take over the lead with her 32.97 being the only split under 33 seconds in the field. Douglass split the 6th fastest backstroke time 33.39 to fall back to 2nd about half-a-second ahead of Alex Walsh.
Douglass had the fastest breaststroke split in the field of 36.80, which was six tenths faster than Walsh, who had the 2nd fastest split at 37.42. Bacon split 39.11 to fall back into 4th behind Mary-Sophie Harvey.
On the freestyle leg, Douglass was 30.74 to maintain her lead over the field and earn the victory. Walsh finished 2nd at 2:09.18 to beat Canada’s Mary-Sophie Harvey by one-hundredth-of-a-second.
Men’s 200 IM – Finals
World Record: 1:52.69 – Leon Marchand, France (2025) U.S. Open Record: 1:54.43 – Ryan Lochte, USA (2010) Meet Record: 1:56.52 – Chase Kalisz, 2022Top 8 Finishers
Hubert Kos (TXLA) – 1:55.50 *Meet Record Baylor Nelson (TEX) – 1:58.36 Finlay Knox (CAN) – 1:58.74 Owen McDonald (IU) – 1:58.81 Kieran Smith (RAC) – 1:58.95 Tristan Jankovics (OSU) – 1:59.23 Noah Cakir (IU) – 2:00.37 Luke Barr (TFA) – 2:00.55Hubert Kos won the men’s 200 IM in the 6th meet record of the session, coming in nearly three seconds ahead of the rest of the field with his final time of 1:55.50.
Kos got out to an early lead, splitting 24.12 on the backstroke to sit eight tenths ahead of Owen McDonald‘s 24.98 in 2nd.
He only extended that lead on the backstroke, splitting 28.48 to be the only swimmer under 29 seconds with McDonald splitting the 2nd fastest leg at 29.77.
On the breaststroke, Kos was 34.13, which maintained his lead over the field as Baylor Nelson moved into 2nd with his 34.03 bringing him in at 2nd for the 150 meter mark.
Kos split 28.77 on the freestyle leg to lock up the win, and break Chase Kalisz’s 2022 meet record. His swim was also just two tenths off his lifetime best of 1:55.34 that he swam to finish 3rd at the 2025 World Championships.
Nelson swam a personal best 1:58.36 to finish 2nd, dropping seven tenths from his previous best of 1:59.13 that he swam in July of 2022.
Canada’s Finlay Knox finished 3rd in 1:58.74.
Women’s 50 Breaststroke – Finals
World Record: 29.16 – Ruta Meilutyte, Lithuania (2023) U.S. Open Record: 29.62 – Lilly King, USA (2018) Meet Record: 30.80 — Mona McSharry, 2025Top 8 Finishers
Mona McSharry (TNAQ) – 30.48 *Meet Record Skyler Smith (NCAC) – 30.59 Mackenzie Lung (FRES) – 30.73 Piper Enge (TEX) – 30.79 Aliz Kalmar (FRES) – 30.80 Alexanne Lepage (CAN) – 31.00 Maria Ramos Najji (OSU)/Caroline Larsen (UOFL) – 31.37 —The women’s 50 breaststroke saw Mona McSharry swim 30.48 to drop three tenths from her prelims swim of 30.80. Since this is the first time the 50s of stroke have been contested at the U.S. Open, the event winners are always meet record holders.
McSharry’s swim was just off her lifetime best 30.29 from 2023 Irish Championships.
Skyler Smith finished 2nd in 30.59, a tenth off her lifetime best 30.41 from June of 2023, and Fresno State’s Mackenzie Lung, who transferred from BYU after last season, finished 3rd in 31.73, a tenth drop from her lifetime best 31.88 from August of this year.
Men’s 50 Breaststroke – Finals
World Record: 25.95 – Adam Peaty, GBR (2017) U.S. Open Record: 26.52 – Michael Andrew, USA (2022) Meet Record: 26.79 — Michael Houlie, 2025Top 8 Finishers:
Michael Houlie (TNAQ) – 26.72 Van Mathias (ISC) – 26.94 Campbell McKean (TEX) – 27.10 Andres Puente Bustamante (TFA) – 27.32 Jack Kelly (UN-MR) – 27.47 Nate Germonprez (TEX) – 27.55 Travis Gulledge (IU) – 27.57 Josh Matheny (ISC) – 27.59South Africa’s Michael Houlie won the men’s 50 breaststroke, coming in just seven hundredths ahead of his prelims swim of 26.79 to lower his own meet record in the event.
His swim was also a new personal best time, dropping from his pre-meet best of 26.82 from July of 2019.
Indiana’s Van Mathias finished 2nd in 26.94, two tenths off his lifetime best of 26.76 from August.
Texas freshman Campbell McKean was 3rd in 27.10, two tenths off the 26.90 he swam to win the USA Swimming Nationals in June.
Women’s 50 Freestyle – Finals
World Record: 23.61 – Sarah Sjostrom, Sweden (2023) U.S. Open Record: 23.91 – Gretchen Walsh, USA (2025) Meet Record: 24.38 – Kate Douglass, 2023Top 8 Finishers
Kate Douglass (NYAC) – 24.20 *Meet Record Simone Manuel (TXLA) – 24.42 Gretchen Walsh (NYAC) – 24.57 Liberty Clark (IU) – 24.67 Marie Wattel (SUN) – 24.68 Darcy Revitt (WSU) – 24.70 Caroline Larsen (UOFL) – 25.12 Elizaveta Klevanovich (AU) – 25.14Kate Douglass picked up her 2nd win and 2nd meet record of the session, swimming 24.20 in the women’s 50 freestyle to come in two tenths ahead of Simone Manuel and two tenths ahead of her own meet record time of 24.38 from the 2023 meet.
Simone Manuel finished 2nd in 24.42, just three hundredths off the 24.39 she swam at the USA Swimming Nationals to earn a spot on the World Championships team, and eight tents faster than the 25.24 she swam at the World Champs in July.
Gretchen Walsh was 3rd in 24.57, six tenths off her lifetime best, and the U.S. Open record time of 23.91.
Indiana freshman Liberty Clark swam 24.67 to drop half-a-second from the 25.10 best time she swam in July, continuing to build on the exceptional first few months of her freshman season.
Men’s 50 Freestyle – Finals
World Record: 20.91 – César Cielo, Brazil (2009) U.S. Open Record: 21.04 – Caeleb Dressel, USA (2021) Meet Record: 21.58 –Andrej Barna, 2025Top 8 Finishers
Chris Guiliano (TXLA) — 21.57 Andrej Barna (SRB) — 21.62 Matt King (ISC) — 21.74 Jonny Kulow (UN) — 21.87 Jack Alexy (CAL) — 21.94 Kaii Winkler (NCS) — 22.03 Tolu Young (UN) — 22.06 Remi Fabiani (UN) — 22.09Chris Giuliano won the men’s 50 free, making the meet perfect when it comes to meet records with each event featuring a new meet record time. His swim of 21.57 broke the record set by Andrej Barna in the prelims of 21.58, which was one hundredth faster than Bruno Fratus’s 2019 record of 21.59. It was also a new personal best time, dropping from the 21.59 he swam at the Olympic Team Trials in 2024.
Barna was 21.62 for 2nd overall, coming in just over a tenth ahead of Indiana’s Matt King, who came in at 21.74, just four hundredths off his lifetime best 21.70 from June of last year.
Jonny Kulow led the trio of ASU swimmers, touching in 21.87 for 4th, a tenth add form his best 21.73. Tolu Young was 7th in 22.06, a drop from his pre-meet best of 22.15 but just off his 21.92 in prelims, and Remi Fabiani was 8th in 22.09, exactly tying his premeet best, but off the 22.91 he swam in prelims
In the ‘B’ final, Caeleb Dressel swam 21.94, which would have tied with Alexy for 5th in the ‘A’ final.
Read the full story on SwimSwam: Watch: Summer McIntosh Swim #2 400 Freestyle of All Time, U.S. Open Night 2 Race Videos
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