The mixed 4 × 100 metre medley relay event at the 2018 Summer Youth Olympics took place on 12 October at the Natatorium in Buenos Aires, Argentina.
Results Heats The heats were started at 11:18Heats results Rank Heat Lane Name Nationality Time Notes 1 4 8 Peng Xuwei (1:01.64)Sun Jiajun (1:01.60)Hong Jinquan (54.25)Yang Junxuan (55.61) 3:53.10 Q 2 2 3 Miku Kojima (1:03.96)Yu Hanaguruma (1:01.80)Shinnosuke Ishikawa (52.96)Nagisa Ikemoto (55.42) 3:54.14 Q 3 4 4 Polina Egorova (1:02.33)Vladislav Gerasimenko (1:01.91)Daniil Markov (54.89)Elizaveta Klevanovich (55.29) 3:54.42 Q 4 3 4 Madison Broad (1:02.17)Alexander Milanovich (1:03.12)Joshua Liendo (54.55)Kyla Leibel (55.53) 3:55.37 Q 5 2 1 Ingeborg Vassbakk Løyning (1:02.83)André Klippenberg Grindheim (1:04.56)Tomoe Zenimoto Hvas (52.34)Malene Rypestøl (57.60) 3:57.33 Q 6 4 5 Rhyan White (1:02.17)Ethan Dang (1:04.62)Jake Johnson (54.30)Kate Douglass (56.37) 3:57.46 Q 7 3 1 Lila Touili (1:03.35)Clara Basso-Bert (1:09.95)Sergueï Comte (54.02)Jean-Marc Delices (50.48) 3:57.80 Q 8 3 8 Julia Mrozinski (1:03.64)Anna Kroniger (1:11.71)Luca Armbruster (53.15)Rafael Miroslaw (49.57) 3:58.07 Q 9 2 8 Kaylee McKeown (1:01.34)Chelsea Hodges (1:10.37)Joseph Jackson (56.63)Ashton Brinkworth (50.07) 3:58.41 10 4 7 Aleksandra Knop (1:03.83)Jan Kałusowski (1:03.70)Jakub Majerski (53.94)Kornelia Fiedkiewicz (57.29) 3:58.76 11 2 7 Björn Seeliger (57.57)Hannah Brunzell (1:11.14)Sara Junevik (1:00.40)Robin Hanson (50.01) 3:59.12 12 4 2 Fernanda de Goeij (1:02.79)Vitor de Souza (1:04.95)Maria Pessanha (1:01.55)Lucas Peixoto (50.16) 3:59.45 13 1 3 Anastasia Gorbenko (1:01.69)Gal Cohen Groumi (1:05.78)Lea Polonsky (1:01.85)Denis Loktev (50.36) 3:59.68 14 2 4 Hendrik Duvenhage (57.58)Michael Houlie (1:01.74)Duné Coetzee (1:03.42)Christin Mundell (58.59) 4:01.33 15 2 5 Natalie Kan (1:04.96)Marcus Mok (1:04.31)Nicholas Lim (55.61)Tinky Ho (57.63) 4:02.51 16 1 6 Noè Ponti (58.16)Elena Onieva Henrich (1:13.75)Antonio Djakovic (54.39)Leoni Richter (57.07) 4:03.37 17 1 5 Guillermo Cruz (58.50)Andrés Puente (1:03.72)Miriam Guevara (1:02.08)Taydé Sansores (59.66) 4:03.96 18 3 7 Alanas Tautkus (57.04)Kotryna Teterevkova (1:09.26)Agnė Šeleikaitė (1:05.77)Arijus Pavlidi (51.95) 4:04.02 19 3 5 Juan Méndez (58.27)María Alborzen (1:11.99)Joaquín González (57.72)Julieta Lema (56.41) 4:04.39 20 3 2 Tatiana Salcuțan (1:02.60)Anastasia Moscenscaia (1:11.36)Nichita Bortnicov (57.80)Ivan Semidetnov (52.98) 4:04.74 21 3 3 Gan Ching Hwee (1:08.15)Maximillian Ang (1:04.72)Ong Jung Yi (55.10)Christie Chue (57.70) 4:05.67 22 3 6 Roni Kallström (58.10)Laura Lahtinen (1:13.74)Nea-Amanda Heinola (1:02.75)Alexey Belfer (53.25) 4:07.84 23 2 2 Lucija Šulenta (1:06.30)Nika Čulina (1:13.81)Dominik Karačić (56.66)Ognjen Marić (52.94) 4:09.71 24 4 1 Anastassiya Rezvantseva (1:05.41)Diana Nazarova (1:20.34)Kirill Shatskov (56.39)Alen Okhotinskiy (53.46) 4:15.60 25 1 4 Anthony Rincón (57.14)María Román (1:24.79)Valentina Becerra (1:02.54)Juan Morales (53.57) 4:18.04 26 2 6 Akhmadjon Umurov (1:02.12)Aleksey Sidorchuk (1:05.80)Bibigul Menlibaeva (1:10.40)Natalya Kritinina (1:00.67) 4:18.99 27 4 3 Trinidad Ardiles (1:05.38)Inés Marín (1:23.60)Benjamin Schnapp (57.98)Martín Valdivieso (55.00) 4:21.96
Final The final was held at 19:42.Final results Rank Lane Name Nationality Time Notes 4 Wang Guanbin (55.31)Sun Jiajun (1:00.22)Lin Xintong (59.52)Yang Junxuan (54.74) 3:49.79 3 Polina Egorova (1:01.98)Anastasia Makarova (1:10.00)Andrei Minakov (51.63)Kliment Kolesnikov (47.85) 3:51.46 5 Miku Kojima (1:03.74)Taku Taniguchi (1:01.16)Shinnosuke Ishikawa (51.94)Nagisa Ikemoto (54.90) 3:51.74 4 2 Ingeborg Vassbakk Løyning (1:02.95)André Klippenberg Grindheim (1:03.21)Tomoe Zenimoto Hvas (53.03)Malene Rypestøl (57.56) 3:56.75 5 7 Rhyan White (1:02.18)Ethan Dang (1:04.34)Jake Johnson (54.40)Kate Douglass (55.89) 3:56.81 6 1 Lila Touili (1:03.56)Clara Basso-Bert (1:09.49)Sergueï Comte (53.88)Jean-Marc Delices (50.32) 3:57.25 7 6 Madison Broad (1:02.68)Alexander Milanovich (1:04.86)Joshua Liendo (53.75)Kyla Leibel (56.03) 3:57.32 8 8 Julia Mrozinski (1:03.08)Anna Kroniger (1:12.17)Luca Armbruster (53.24)Rafael Miroslaw (49.39) 3:57.88
References