The mixed 4 × 100 metre medley relay event at the 2024 World Aquatics Swimming Championships (25 m) was held on 14 December 2024 at the Duna Arena in Budapest, Hungary.

Background It was the first time this event was held at the Championships. The Neutral Athletes B team (consisting entirely of Russian athletes) opened with Miron Lifincev and Kirill Prigoda on back and breast, with Arina Surkova and Daria Klepikova closing the relay. The USA's team featured Regan Smith, Lilly King, Dare Rose, and Jack Alexy. Other medal contenders included Canada, Italy, Australia, and China.

SwimSwam wrote that predicting the winners of the mixed relays was "nigh impossible" due to the amount of variables. They predicted Australia would win, the USA would come second, and the Neutral Athletes B team would come third.

Results Heats The heats were started at 11:53.

Rank Heat Lane Nation Swimmers Time Notes 1 5 4 Shaine Casas (50.04)AJ Pouch (56.76)Alex Shackell (55.70)Alex Walsh (51.80) 3:34.30 Q 2 5 5 Iona Anderson (56.29)Joshua Yong (56.46)Matthew Temple (48.84)Milla Jansen (52.72) 3:34.31 Q 3 5 3 Maaike de Waard (56.66)Caspar Corbeau (56.69)Nyls Korstanje (49.75)Milou van Wijk (52.20) 3:35.30 Q 4 4 5 Blake Tierney (50.48)Sophie Angus (1:03.89)Finlay Knox (49.96)Penny Oleksiak (51.97) 3:36.30 Q 5 4 3 Oliver Morgan (50.83)Angharad Evans (1:03.64)Joshua Gammon (50.16)Eva Okaro (51.76) 3:36.39 Q 6 1 4 Neutral Athletes B Pavel Samusenko (50.30)Aleksandr Zhigalov (56.84)Arina Surkova (56.95)Daria Trofimova (52.31) 3:36.40 Q 7 5 1 Carmen Weiler (56.89)Carles Coll (57.21)Mario Mollá (49.36)María Daza (53.32) 3:36.78 Q, NR 8 4 6 Lorenzo Mora (50.67)Ludovico Viberti (57.51)Elena Capretta (57.06)Sofia Morini (52.02) 3:37.26 Q, NR 9 5 6 Masaki Yura (51.23)Taku Taniguchi (56.44)Mizuki Hirai (56.07)Yume Jinno (53.62) 3:37.36 10 5 7 Ruard van Renen (50.07)Rebecca Meder (1:04.81)Chad le Clos (49.57)Caitlin de Lange (53.26) 3:37.71 11 4 2 Kacper Stokowski (49.78)Dominika Sztandera (1:04.38)Jakub Majerski (50.08)Kornelia Fiedkiewicz (53.52) 3:37.76 NR 12 5 2 Samuel Törnqvist (51.05)Daniel Kertes (57.95)Sara Junevik (56.48)Sofia Åstedt (52.67) 3:38.15 NR 13 4 4 Wang Gukailai (50.91)Yu Zongda (58.22)Chen Luying (56.88)Luo Mingyu (53.09) 3:39.10 NR 14 4 7 Ádám Jászó (51.84)Henrietta Fángli (1:05.41)Panna Ugrai (57.09)Boldizsár Magda (47.24) 3:41.58 NR 15 4 8 Hayden Kwan (52.14)Adam Mak (58.38)Yeung Hoi Ching (58.16)Li Sum Yiu (53.69) 3:42.37 NR 16 5 8 Xeniya Ignatova (59.34)Arsen Kozhakhmetov (58.00)Adilbek Mussin (50.15)Sofia Spodarenko (55.32) 3:42.81 17 3 5 Martin Perečinský (52.71)Andrea Podmaníková (1:06.78)Tamara Potocká (56.76)Jakub Poliačik (48.30) 3:44.55 NR 18 4 1 Cooper Morley (51.76)Brearna Crawford (1:07.70)Ben Littlejohn (52.14)Zoe Pedersen (53.40) 3:45.00 NR 19 1 6 Guðmundur Leo Rafnsson (53.14)Einar Margeir Ágústsson (57.95)Jóhanna Elín Guðmundsdóttir (1:00.90)Snæfríður Jórunnardóttir (53.02) 3:45.01 NR 20 3 6 Alexia Sotomayor (1:00.74)Anthony Puertas (1:02.00)Diego Balbi (51.80)Rafaela Fernandini (55.41) 3:49.95 NR 21 3 7 Elizabeth Jiménez (1:01.19)Josué Domínguez (59.17)Javier Núñez (52.97)Darielys Ortiz (58.28) 3:51.61 NR 22 3 2 Jessica Humphrey (1:01.56)Ronan Wantenaar (59.77)Oliver Durand (54.61)Molina Smalley (58.84) 3:54.78 NR 23 2 3 Elizaveta Pecherskikh (1:03.66)Denis Petrashov (57.38)Daniil Mistriukov (58.8)Aiymkyz Aidaralieva (59.18) 3:59.02 24 2 6 Imara Thorpe (1:03.55) Haniel Kudwoli (1:02.34)Stephen Nyoike (57.41)Sara Mose (56.24) 3:59.54 NR 25 2 8 Natalia Zaiteva (1:04.01)Constantin Malachi (1:00.82)Anastasia Basisto (1:04.03)Chirill Chirsanov (52.29) 4:01.15 26 2 1 Adnan Al-Abdallat (59.44)Amro Al-Wir (59.91)Tara Al-Oul (1:05.65)Karin Belbeisi (1:00.75) 4:05.75 NR 27 1 2 Kirabo Namutebi (1:07.61)Tendo Mukalazi (1:04.06)Tendo Kaumi (59.94)Gloria Anna Muzito (54.59) 4:06.20 NR 28 2 7 Kim Sol-song (1:08.84)Kim Won-ju (1:05.15)Kim Ryong-hyon (56.41)Pak Mi-song (57.20) 4:07.60 29 3 8 Idealy Tendrinavalona (1:05.05)Jonathan Raharvel (1:02.27)Baritiana Andriampenomanana (1:01.37)Antsa Rabejaona (59.00) 4:07.69 NR 30 1 7 Kaiya Brown (1:09.92)Kokoro Frost (1:07.96)Paige Schendelaar-Kemp (1:01.91)Hector Langkilde (49.70) 4:09.49 31 2 4 Piper Raho (1:09.54)Kouki Cerezo Watanabe (1:05.67)Taiyo Akimaru (59.22)Maria Batallones (1:02.63) 4:17.06 32 2 2 Mohamed Rihan Shiham (1:03.27)Hamna Ahmed (1:24.36)Meral Ayn Latheef (1:12.29)Mohamed Aan Hussain (52.13) 4:32.05 1 3 Neutral Athletes A Anastasiya Shkurdai (57.60)Ilya Shymanovich (57.69)Anastasiya Kuliashova (56.64)Grigori Pekarski 3 1 Melissa Diego (1:02.17)Nicole MackErick GordilloMiguel Vásquez 3 3 Ronny BrännkärrDavin LindholmLaura LahtinenFanny Teijonsalo

Final The final was held at 19:14.

Rank Lane Nation Swimmers Time Notes 7 Neutral Athletes B Miron Lifintsev (48.90)Kirill Prigoda (54.86)Arina Surkova (55.63)Daria Klepikova (51.08) 3:30.47 4 Regan Smith (54.19)Lilly King (1:03.05)Dare Rose (48.68)Jack Alexy (44.63) 3:30.55 6 Ingrid Wilm (55.82)Finlay Knox (56.39)Ilya Kharun (48.27)Mary-Sophie Harvey (51.49) 3:31.97 4 5 Iona Anderson (55.89)Joshua Yong (56.40)Matthew Temple (48.63)Milla Jansen (51.91) 3:32.83 5 2 Oliver Morgan (50.53)Angharad Evans (1:03.44)Joshua Gammon (50.00)Eva Okaro (51.49) 3:35.46 6 1 Carmen Weiler (56.97)Carles Coll (56.63)Mario Mollá (49.19)María Daza (52.73) 3:35.52 NR 7 8 Lorenzo Mora (50.11)Ludovico Viberti (57.08)Elena Capretta (56.77)Sara Curtis (51.58) 3:35.54 NR 8 3 Maaike de Waard (57.14)Caspar Corbeau (56.47)Nyls Korstanje (49.83)Milou van Wijk (52.60) 3:36.04

References