# 2024 World Aquatics Swimming Championships (25 m)

The 17th World Aquatics Swimming Championships (25 m) was taken place from 10 to 15 December 2024 in Budapest, Hungary at the Duna Arena. Swimming events in the championships were conducted in a 25-metre indoor (short course) pool.
The 4×50 m freestyle relay and 4×50 m medley relay for men and women were removed from the event lineups, and the mixed 4 × 100 m medley relay was added, for a total of 45 medal events.
The United States topped the medal table, winning 18 gold & 39 medals in total, and broke 21 world records in the championships, were named the best team award. Noe Ponti of Switzerland was named the best male swimmer and Gretchen Walsh of the United States was named the best female swimmer.

## Qualification

The qualification period for the 2024 World Swimming Championships ran from 23 July 2023 through 17 November 2024.
Below were the qualifying times as determined by World Aquatics:
| Event | Men | Women | Men | Women |
| | "A" | "A" | "B" | "B" |
| 50 m freestyle | 21.40 | 24.44 | 22.15 | 25.30 |
| 100 m freestyle | 47.23 | 53.78 | 48.88 | 55.66 |
| 200 m freestyle | 1:44.08 | 1:55.60 | 1:47.72 | 1:59.65 |
| 400 m freestyle | 3:42.50 | 4:06.95 | 3:50.29 | 4:15.59 |
| 800 m freestyle | 7:45.02 | 8:29.17 | 8:01.30 | 8:46.99 |
| 1500 m freestyle | 14:49.29 | 16:15.27 | 15:20.42 | 16:49.40 |
| 50 m backstroke | 23.38 | 26.54 | 24.20 | 27.47 |
| 100 m backstroke | 51.30 | 58.08 | 53.10 | 1:00.11 |
| 200 m backstroke | 1:52.66 | 2:05.54 | 1:56.60 | 2:09.93 |
| 50 m breaststroke | 26.57 | 30.45 | 27.50 | 31.52 |
| 100 m breaststroke | 57.63 | 1:05.28 | 59.65 | 1:07.56 |
| 200 m breaststroke | 2:06.23 | 2:23.38 | 2:10.65 | 2:28.40 |
| 50 m butterfly | 22.53 | 25.82 | 23.32 | 26.72 |
| 100 m butterfly | 50.57 | 57.40 | 52.34 | 59.41 |
| 200 m butterfly | 1:53.61 | 2:08.85 | 1:57.59 | 2:13.36 |
| 100 m individual medley | 52.98 | 59.65 | 54.83 | 1:01.74 |
| 200 m individual medley | 1:55.25 | 2:10.16 | 1:59.28 | 2:14.72 |
| 400 m individual medley | 4:09.19 | 4:37.54 | 4:17.91 | 4:47.25 |

## Schedule

An opening ceremony will proceed the start of competition on 10 December and a closing ceremony will conclude the Championships on 15 December following competition termination.
A total of 45 events will be contested over six consecutive days.
| H | Heats | SF | Semifinals | Finals | TF | Timed Finals |
Men :
| Date → | Tue 10 | Tue 10 | Wed 11 | Wed 11 | Thu 12 | Thu 12 | Fri 13 | Fri 13 | Sat 14 | Sat 14 | Sun 15 | Sun 15 |
| Event ↓ | M | E | M | E | M | E | M | E | M | E | M | E |
| 50 m freestyle | | | | | | | | | H | SF | | |
| 100 m freestyle | | | H | SF | | | | | | | | |
| 200 m freestyle | | | | | | | | | | | H | |
| 400 m freestyle | | | | | H | | | | | | | |
| 800 m freestyle | | | | | | | | | TF | TF | | |
| 1500 m freestyle | TF | TF | | | | | | | | | | |
| 50 m backstroke | | | | | H | SF | | | | | | |
| 100 m backstroke | H | SF | | | | | | | | | | |
| 200 m backstroke | | | | | | | | | | | H | |
| 50 m breaststroke | | | | | | | | | H | SF | | |
| 100 m breaststroke | | | H | SF | | | | | | | | |
| 200 m breaststroke | | | | | | | H | | | | | |
| 50 m butterfly | H | SF | | | | | | | | | | |
| 100 m butterfly | | | | | | | H | SF | | | | |
| 200 m butterfly | | | | | H | | | | | | | |
| 100 m individual medley | | | | | H | SF | | | | | | |
| 200 m individual medley | H | | | | | | | | | | | |
| 400 m individual medley | | | | | | | | | H | | | |
| 4 × 100 m freestyle relay | H | | | | | | | | | | | |
| 4 × 200 m freestyle relay | | | | | | | H | | | | | |
| 4 × 100 m medley relay | | | | | | | | | | | H | |
Women :
| Date → | Tue 10 | Tue 10 | Wed 11 | Wed 11 | Thu 12 | Thu 12 | Fri 13 | Fri 13 | Sat 14 | Sat 14 | Sun 15 | Sun 15 |
| Event ↓ | M | E | M | E | M | E | M | E | M | E | M | E |
| 50 m freestyle | | | | | | | | | H | SF | | |
| 100 m freestyle | | | H | SF | | | | | | | | |
| 200 m freestyle | | | | | | | | | | | H | |
| 400 m freestyle | H | | | | | | | | | | | |
| 800 m freestyle | | | TF | TF | | | | | | | | |
| 1500 m freestyle | | | | | | | TF | TF | | | | |
| 50 m backstroke | | | | | H | SF | | | | | | |
| 100 m backstroke | H | SF | | | | | | | | | | |
| 200 m backstroke | | | | | | | | | | | H | |
| 50 m breaststroke | | | | | | | | | H | SF | | |
| 100 m breaststroke | | | H | SF | | | | | | | | |
| 200 m breaststroke | | | | | | | H | | | | | |
| 50 m butterfly | H | SF | | | | | | | | | | |
| 100 m butterfly | | | | | | | H | SF | | | | |
| 200 m butterfly | | | | | H | | | | | | | |
| 100 m individual medley | | | | | H | SF | | | | | | |
| 200 m individual medley | H | | | | | | | | | | | |
| 400 m individual medley | | | | | | | | | H | | | |
| 4 × 100 m freestyle relay | H | | | | | | | | | | | |
| 4 × 200 m freestyle relay | | | | | H | | | | | | | |
| 4 × 100 m medley relay | | | | | | | | | | | H | |
Mixed :
| Date → | Tue 10 | Tue 10 | Wed 11 | Wed 11 | Thu 12 | Thu 12 | Fri 13 | Fri 13 | Sat 14 | Sat 14 | Sun 15 | Sun 15 |
| Event ↓ | M | E | M | E | M | E | M | E | M | E | M | E |
| 4 × 50 m freestyle relay | | | | | | | H | | | | | |
| 4 × 50 m medley relay | | | H | | | | | | | | | |
| 4 × 100 m medley relay | | | | | | | | | H | | | |

## Medal summary
### Medal table

* Host nation (Hungary)
| Rank | Nation | Gold | Silver | Bronze | Total |
| 1 | United States | 18 | 13 | 8 | 39 |
| 2 | Neutral Athletes B | 6 | 4 | 0 | 10 |
| 3 | Canada | 4 | 5 | 6 | 15 |
| 4 | China | 3 | 1 | 1 | 5 |
| 5 | Switzerland | 3 | 0 | 0 | 3 |
| 6 | Australia | 2 | 5 | 5 | 12 |
| 7 | Hungary* | 2 | 2 | 0 | 4 |
| 8 | Italy | 1 | 5 | 3 | 9 |
| 9 | Germany | 1 | 3 | 0 | 4 |
| 10 | Cayman Islands | 1 | 0 | 1 | 2 |
| 10 | Tunisia | 1 | 0 | 1 | 2 |
| 12 | Hong Kong | 1 | 0 | 0 | 1 |
| 12 | Lithuania | 1 | 0 | 0 | 1 |
| 12 | Spain | 1 | 0 | 0 | 1 |
| 15 | France | 0 | 3 | 2 | 5 |
| 16 | Brazil | 0 | 2 | 1 | 3 |
| 17 | Great Britain | 0 | 1 | 2 | 3 |
| 18 | Netherlands | 0 | 1 | 1 | 2 |
| 18 | Turkey | 0 | 1 | 1 | 2 |
| 20 | Austria | 0 | 1 | 0 | 1 |
| 21 | Poland | 0 | 0 | 5 | 5 |
| 22 | Neutral Athletes A | 0 | 0 | 2 | 2 |
| 23 | Belgium | 0 | 0 | 1 | 1 |
| 23 | Estonia | 0 | 0 | 1 | 1 |
| 23 | Ireland | 0 | 0 | 1 | 1 |
| 23 | Japan | 0 | 0 | 1 | 1 |
| Totals (26 entries) | Totals (26 entries) | 45 | 47 | 43 | 135 |

## Results
### Men's events

| Event | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 50 m freestyle details | Jordan Crooks Cayman Islands | 20.19 | Guilherme Caribé Brazil | 20.57 | Jack Alexy United States | 20.61 |
| 100 m freestyle details | Jack Alexy United States | 45.38 | Guilherme Caribé Brazil | 45.47 SA | Jordan Crooks Cayman Islands | 45.48 |
| 200 m freestyle details | Luke Hobson United States | 1:38.61 WR | Maximillian Giuliani Australia | 1:40.36 OC | Lucas Henveaux Belgium | 1:41.13 NR |
| 400 m freestyle details | Elijah Winnington Australia | 3:35.89 | Carson Foster United StatesKieran Smith United States | 3:36.31 | Not awarded |
| 800 m freestyle details | Zalán Sárkány Hungary | 7:30.56 NR | Florian Wellbrock Germany | 7:31.90 | Ahmed Jaouadi Tunisia | 7:31.93 AF |
| 1500 m freestyle details | Ahmed Jaouadi Tunisia | 14:16.40 | Florian Wellbrock Germany | 14:17.27 | Kuzey Tunçelli Turkey | 14:20.64 WJ, NR |
| 50 m backstroke details | Miron Lifintsev Neutral Athletes B | 22.47 WJ | Isaac Cooper Australia | 22.49 OC | Shane Ryan Ireland | 22.56 NR |
| 100 m backstroke details | Miron Lifintsev Neutral Athletes B | 48.76 WJ | Hubert Kós Hungary | 48.79 NR | Kacper Stokowski Poland | 49.16 NR |
| 200 m backstroke details | Hubert Kós Hungary | 1:45.65 CR, ER | Lorenzo Mora Italy | 1:48.96 | Mewen Tomac France | 1:49.93 |
| 50 m breaststroke details | Qin Haiyang China | 25.42 | Kirill Prigoda Neutral Athletes BEmre Sakçı Turkey | 25.56 | Not awarded |
| 100 m breaststroke details | Qin Haiyang China | 55.47 CR, AS | Kirill Prigoda Neutral Athletes B | 55.49 NR | Ilya Shymanovich Neutral Athletes A | 55.60 |
| 200 m breaststroke details | Carles Coll Martí Spain | 2:01.55 NR | Kirill Prigoda Neutral Athletes B | 2:01.88 | Yamato Fukasawa Japan | 2:02.01 |
| 50 m butterfly details | Noè Ponti Switzerland | 21.32 WR | Ilya Kharun Canada | 21.67 AM | Nyls Korstanje Netherlands | 21.68 |
| 100 m butterfly details | Noè Ponti Switzerland | 47.71 WR | Maxime Grousset France | 48.57 NR | Matthew Temple Australia | 48.71 |
| 200 m butterfly details | Ilya Kharun Canada | 1:48.24 =CR, AM | Alberto Razzetti Italy | 1:48.64 ER | Krzysztof Chmielewski Poland | 1:49.26 NR |
| 100 m individual medley details | Noè Ponti Switzerland | 50.33 CR, NR | Bernhard Reitshammer Austria | 51.11 NR | Caio Pumputis Brazil | 51.35 SA |
| 200 m individual medley details | Shaine Casas United States | 1:49.51 CR, AM | Alberto Razzetti Italy | 1:50.88 NR | Finlay Knox Canada | 1:50.90 NR |
| 400 m individual medley details | Ilya Borodin Neutral Athletes B | 3:56.83 | Carson Foster United States | 3:57.45 | Alberto Razzetti Italy | 3:58.83 |
| 4×100 m freestyle relay details | United States Jack Alexy (45.05) CR, AM Luke Hobson (45.18) Kieran Smith (46.01) Chris Guiliano (45.42) Trenton Julian | 3:01.66 WR | Italy Alessandro Miressi (45.85) Leonardo Deplano (45.76) Lorenzo Zazzeri (46.21) Manuel Frigo (45.73) | 3:03.65 | Poland Kamil Sieradzki (46.33) Jakub Majerski (46.04) Ksawery Masiuk (45.64) Kacper Stokowski (46.45) Piotr Ludwiczak | 3:04.46 NR |
| 4×200 m freestyle relay details | United States Luke Hobson (1:38.91) WR Carson Foster (1:40.77) Shaine Casas (1:40.34) Kieran Smith (1:40.49) Trenton Julian Daniel Matheson | 6:40.51 WR | Australia Maximillian Giuliani (1:40.73) Edward Sommerville (1:41.03) Harrison Turner (1:42.21) Elijah Winnington (1:41.57) David Schlicht | 6:45.54 OC | Italy Filippo Megli (1:42.26) Manuel Frigo (1:42.15) Carlos D'Ambrosio (1:41.48) Alberto Razzetti (1:41.62) Davide Dalla Costa Alessandro Ragaini | 6:47.51 NR |
| 4×100 m medley relay details | Neutral Athletes B Miron Lifintsev (49.31) Kirill Prigoda (55.15) Andrey Minakov (48.80) Egor Kornev (45.42) Pavel Samusenko Aleksandr Zhigalov Dmitrii Zhavoronkov | 3:18.68 WR | United States Shaine Casas (48.92) Michael Andrew (57.03) Dare Rose (48.55) Jack Alexy (44.53) AJ Pouch Zach Harting Harrison Turner | 3:19.03 | Italy Lorenzo Mora (49.53) Ludovico Viberti (56.15) Michele Busa (48.81) Alessandro Miressi (45.42) Christian Bacico Simone Cerasuolo Simone Stefanì | 3:19.91 |
$^a$ Swimmers who participated in the heats only and received medals.

### Women's events

| Event | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 50 m freestyle details | Gretchen Walsh United States | 22.83 WR | Kate Douglass United States | 23.05 | Katarzyna Wasick Poland | 23.37 |
| 100 m freestyle details | Gretchen Walsh United States | 50.31 CR, AM | Béryl Gastaldello France | 50.63 NR | Kate Douglass United States | 50.73 |
| 200 m freestyle details | Siobhán Haughey Hong Kong | 1:50.62 | Mary-Sophie Harvey Canada | 1:51.49 AM | Claire Weinstein United States | 1:51.62 WJ, NR |
| 400 m freestyle details | Summer McIntosh Canada | 3:50.25 WR | Lani Pallister Australia | 3:53.73 OC | Mary-Sophie Harvey Canada | 3:54.88 |
| 800 m freestyle details | Lani Pallister Australia | 8:01.95 CR, NR | Isabel Marie Gose Germany | 8:05.42 NR | Katie Grimes United States | 8:05.90 |
| 1500 m freestyle details | Isabel Marie Gose Germany | 15:24.69 | Simona Quadarella Italy | 15:30.14 | Jillian Cox United States | 15:41.29 |
| 50 m backstroke details | Regan Smith United States | 25.23 WR | Katharine Berkoff United States | 25.61 | Kylie Masse Canada | 25.78 |
| 100 m backstroke details | Regan Smith United States | 54.55 CR | Katharine Berkoff United States | 54.93 | Ingrid Wilm Canada | 55.75 |
| 200 m backstroke details | Regan Smith United States | 1:58.04 WR | Summer McIntosh Canada | 1:59.96 WJ, NR | Anastasiya Shkurdai Neutral Athletes A | 2:00.56 |
| 50 m breaststroke details | Rūta Meilutytė Lithuania | 28.54 | Tang Qianting China | 28.86 | Lilly King United States | 28.91 |
| 100 m breaststroke details | Tang Qianting China | 1:02.38 | Lilly King United States | 1:02.80 | Eneli Jefimova Estonia | 1:03.25 |
| 200 m breaststroke details | Kate Douglass United States | 2:12.50 WR | Evgeniia Chikunova Neutral Athletes B | 2:15.14 | Alex Walsh United States | 2:16.83 |
| 50 m butterfly details | Gretchen Walsh United States | 24.01 | Béryl Gastaldello France | 24.43 NR | Alexandria Perkins Australia | 24.68 OC |
| 100 m butterfly details | Gretchen Walsh United States | 52.71 WR | Tessa Giele Netherlands | 54.66 NR | Alexandria Perkins Australia | 55.10 OC |
| 200 m butterfly details | Summer McIntosh Canada | 1:59.32 WR | Regan Smith United States | 2:01.00 NR | Elizabeth Dekkers Australia | 2:02.91 |
| 100 m individual medley details | Gretchen Walsh United States | 55.11 WR | Kate Douglass United States | 56.49 | Béryl Gastaldello France | 56.67 NR |
| 200 m individual medley details | Kate Douglass United States | 2:01.63 WR | Alex Walsh United States | 2:02.65 | Abbie Wood Great Britain | 2:02.75 NR |
| 400 m individual medley details | Summer McIntosh Canada | 4:15.48 WR | Katie Grimes United States | 4:20.14 NR | Abbie Wood Great Britain | 4:24.34 |
| 4×100 m freestyle relay details | United States Kate Douglass (50.95) Katharine Berkoff (51.38) Alex Shackell (52.01) Gretchen Walsh (50.67) Phoebe Bacon Jillian Cox | 3:25.01 WR | Australia Meg Harris (52.59) Milla Jansen (51.62) Alexandria Perkins (51.68) Lani Pallister (52.36) Lily Price Leah Neale | 3:28.25 | Canada Mary-Sophie Harvey (52.40) Summer McIntosh (51.81) Ingrid Wilm (52.22) Penny Oleksiak (52.01) Sydney Pickrem Alexanne Lepage | 3:28.44 |
| 4×200 m freestyle relay details | United States Alex Walsh (1:53.25) Paige Madden (1:53.18) Katie Grimes (1:53.39) Claire Weinstein (1:50.31) Phoebe Bacon Lilla Bognar | 7:30.13 WR | Hungary Nikolett Pádár (1:52.81) Panna Ugrai (1:52.59) Dóra Molnár (1:55.39) Lilla Minna Ábrahám (1:52.60) | 7:33.39 NR | Australia Leah Neale (1:52.79) Elizabeth Dekkers (1:54.96) Milla Jansen (1:54.01) Lani Pallister (1:51.84) Tara Kinder | 7:33.60 |
| 4×100 m medley relay details | United States Regan Smith (54.02) WR Lilly King (1:03.02) Gretchen Walsh (52.84) Kate Douglass (50.53) Katharine Berkoff Emma Weber Alex Shackell Alex Walsh | 3:40.41 WR | Great Britain Abbie Wood (57.44) Angharad Evans (1:03.18) Eva Okaro (56.11) Freya Anderson (51.11) | 3:47.84 NR | China Qian Xinan (56.88) Tang Qianting (1:03.17) Chen Luying (56.25) Liu Shuhan (51.63) | 3:47.93 |
$^b$ Swimmers who participated in the heats only and received medals.

### Mixed events

| Event | Gold | Gold | Silver | Silver | Bronze | Bronze |
| 4×50 m freestyle relay details | Italy Leonardo Deplano (20.80) Alessandro Miressi (21.01) Silvia Di Pietro (23.35) Sara Curtis (23.34) Lorenzo Zazzeri | 1:28.50 | Canada Ilya Kharun (20.80) Yuri Kisil (20.57) Ingrid Wilm (23.72) Mary-Sophie Harvey (23.51) Finlay Knox Penny Oleksiak | 1:28.60 | Poland Piotr Ludwiczak (21.31) Kamil Sieradzki (20.89) Kornelia Fiedkiewicz (23.70) Katarzyna Wasick (22.90) | 1:28.80 NR |
| 4×50 m medley relay details | Neutral Athletes B Miron Lifintsev (22.39) Kirill Prigoda (24.94) Arina Surkova (24.43) Daria Trofimova (23.60) Pavel Samusenko Oleg Kostin Daria Klepikova | 1:35.36 ER | Canada Kylie Masse (25.87) Finlay Knox (25.53) Ilya Kharun (20.73) Ingrid Wilm (23.81) | 1:35.94 NR | United States Shaine Casas (22.85) Michael Andrew (25.29) Regan Smith (24.90) Katharine Berkoff (23.16) AJ Pouch Alex Shackell Alex Walsh | 1:36.20 |
| 4×100 m medley relay details | Neutral Athletes B Miron Lifintsev (48.90) Kirill Prigoda (54.86) Arina Surkova (55.63) Daria Klepikova (51.08) Pavel Samusenko Aleksandr Zhigalov Daria Trofimova | 3:30.47 | United States Regan Smith (54.19) Lilly King (1:03.05) Dare Rose (48.68) Jack Alexy (44.63) Shaine Casas AJ Pouch Alex Shackell | 3:30.55 | Canada Ingrid Wilm (55.82) Finlay Knox (56.39) Ilya Kharun (48.27) Mary-Sophie Harvey (51.49) Blake Tierney Sophie Angus Penny Oleksiak | 3:31.97 |
$^c$ Swimmers who participated in the heats only and received medals.

## Records

The following world and championship records were established during the competition:

### World records

| Date | Round | Event | Established for | Time | Name | Nation |
| 10 December | Heat 5 | Women's 50 metre butterfly | (same) | 24.02 | Gretchen Walsh | United States |
| 10 December | Final | Women's 400 metre freestyle | (same) | 3:50.25 | Summer McIntosh | Canada |
| 10 December | Semifinal 2 | Women's 50 metre butterfly | (same) | 23.94 | Gretchen Walsh | United States |
| 10 December | Semifinal 2 | Men's 50 metre butterfly | (same) | 21.43 | Noè Ponti | Switzerland |
| 10 December | Final | Women's 200 metre individual medley | (same) | 2:01.63 | Kate Douglass | United States |
| 10 December | Final | Women's 4 × 100 metre freestyle relay | (same) | 3:25.01 | Kate Douglass (50.95) Katharine Berkoff (51.38) Alex Shackell (52.01) Gretchen Walsh (50.67) | United States |
| 10 December | Final | Men's 4 × 100 metre freestyle relay | (same) | 3:01.66 | Jack Alexy (45.05) Luke Hobson (45.18) Kieran Smith (46.01) Chris Guiliano (45.42) | United States |
| 11 December | Final | Men's 50 metre butterfly | (same) | 21.32 | Noè Ponti | Switzerland |
| 12 December | Final | Women's 200 metre butterfly | (same) | 1:59.32 | Summer McIntosh | Canada |
| 12 December | Semifinal 2 | Women's 100 metre individual medley | (same) | 55.71 | Gretchen Walsh | United States |
| 12 December | Final | Women's 4 × 200 metre freestyle relay | (same) | 7:30.13 | Alex Walsh (1:53.25) Paige Madden (1:53.18) Katie Grimes (1:53.39) Claire Weinstein (1:50.31) | United States |
| 13 December | Heat 5 | Women's 100 metre butterfly | (same) | 53.24 | Gretchen Walsh | United States |
| 13 December | Semifinal 2 | Women's 100 metre butterfly | (same) | 52.87 | Gretchen Walsh | United States |
| 13 December | Final | Women's 200 metre breaststroke | (same) | 2:12.50 | Kate Douglass | United States |
| 13 December | Final | Women's 50 metre backstroke | (same) | 25.23 | Regan Smith | United States |
| 13 December | Final | Women's 100 metre individual medley | (same) | 55.11 | Gretchen Walsh | United States |
| 13 December | Final | Men's 4 × 200 metre freestyle relay | Men's 200 metre freestyle | 1:38.91 | Luke Hobson | United States |
| 13 December | Final | Men's 4 × 200 metre freestyle relay | (same) | 6:40.51 | Luke Hobson (1:38.91) Carson Foster (1:40.77) Shaine Casas (1:40.34) Kieran Smith (1:40.49) | United States |
| 14 December | Heat 10 | Men's 50 metre freestyle | (same) | 20.08 | Jordan Crooks | Cayman Islands |
| 14 December | Semifinal 2 | Men's 50 metre freestyle | (same) | 19.90 | Jordan Crooks | Cayman Islands |
| 14 December | Final | Women's 100 metre butterfly | (same) | 52.71 | Gretchen Walsh | United States |
| 14 December | Semifinal 2 | Women's 50 metre freestyle | (same) | 22.87 | Gretchen Walsh | United States |
| 14 December | Final | Men's 100 metre butterfly | (same) | 47.71 | Noè Ponti | Switzerland |
| 14 December | Final | Women's 400 metre individual medley | (same) | 4:15.48 | Summer McIntosh | Canada |
| 15 December | Final | Women's 50 metre freestyle | (same) | 22.83 | Gretchen Walsh | United States |
| 15 December | Final | Women's 200 metre backstroke | (same) | 1:58.04 | Regan Smith | United States |
| 15 December | Final | Men's 200 metre freestyle | (same) | 1:38.61 | Luke Hobson | United States |
| 15 December | Final | Women's 4 × 100 metre medley relay | Women's 100 metre backstroke | 54.02 | Regan Smith | United States |
| 15 December | Final | Women's 4 × 100 metre medley relay | (same) | 3:40.41 | Regan Smith (54.02) Lilly King (1:03.02) Gretchen Walsh (52.84) Kate Douglass (50.53) | United States |
| 15 December | Final | Men's 4 × 100 metre medley relay | (same) | 3:18.68 | Miron Lifintsev (49.31) Kirill Prigoda (55.15) Andrei Minakov (48.80) Egor Kornev (45.42) | Neutral Athletes B |

### Championship records

| Date | Round | Event | Established for | Time | Name | Nation |
| 10 December | Heat 8 | Men's 50 metre butterfly | (same) | 21.62 | Nyls Korstanje | Netherlands |
| 10 December | Heat 9 | Men's 50 metre butterfly | (same) | 21.53 | Noè Ponti | Switzerland |
| 10 December | Final | Men's 200 metre individual medley | (same) | 1:49.51 | Shaine Casas | United States |
| 10 December | Final | Men's 4 × 100 metre freestyle relay | Men's 100 metre freestyle | 45.05 | Jack Alexy | United States |
| 11 December | Heat 9 | Men's 100 metre freestyle | (same) | 44.95 | Jordan Crooks | Cayman Islands |
| 11 December | Final | Women's 100 metre backstroke | (same) | 54.55 | Regan Smith | United States |
| 11 December | Semifinal 2 | Women's 100 metre freestyle | (same) | 50.49 | Gretchen Walsh | United States |
| 11 December | Final | Women's 800 metre freestyle | (same) | 8:01.95 | Lani Pallister | Australia |
| 12 December | Heat 4 | Women's 100 metre individual medley | (same) | 56.06 | Gretchen Walsh | United States |
| 12 December | Final | Women's 100 metre freestyle | (same) | 50.31 | Gretchen Walsh | United States |
| 12 December | Final | Men's 200 metre butterfly | (same) | =1:48.24 | Ilya Kharun | Canada |
| 12 December | Final | Men's 100 metre breaststroke | (same) | 55.47 | Qin Haiyang | China |
| 12 December | Semifinal 1 | Men's 100 metre individual medley | (same) | 50.43 | Noè Ponti | Switzerland |
| 13 December | Final | Men's 100 metre individual medley | (same) | 50.33 | Noè Ponti | Switzerland |
| 14 December | Heat 8 | Women's 50 metre freestyle | (same) | 23.02 | Gretchen Walsh | United States |
| 15 December | Final | Men's 200 metre backstroke | (same) | 1:45.65 | Hubert Kós | Hungary |