The men's 100 metre backstroke event at the 2024 World Aquatics Swimming Championships (25 m) was held from 10 to 11 December 2024 at the Duna Arena in Budapest, Hungary.

Records Prior to the competition, the existing world and championship records were as follows.

Background The event featured a field led by recent performances at the Russian Short Course Championships, where Miron Lifintsev (49.26) and Pavel Samusenko (49.56) both swam under 49.60. Lifintsev and Samusenko were both competing as neutral athletes. Lifintsev also held the world junior record in long course (52.08), set at the 2024 Russian World Cup. Samusenko previously placed fourth in this event at the 2021 Short Course World Championships with a time of 49.65. France’s Mewen Tomac entered with a 49.72 from the 2023 European Short Course Championships but had only swum 50.28 this season. Poland’s Kacper Stokowski, a 2022 Worlds finalist, entered with a 49.87 and had earned multiple World Cup medals in 2024. Fellow Frenchman Yohann Ndoye-Brouard, an Olympic medley relay bronze medalist, was also in contention with a 49.96 entry time. Returning medalists from 2022, Lorenzo Mora (silver) and Isaac Cooper (bronze), also featured in the field.

SwimSwam predicted Lifintsev would win, Samusenko would come second, and Stokowski would come third.

Results Heats The heats were started on 10 December at 09:54. Rank Heat Lane Name Nationality Time Notes 1 5 0 Hubert Kós 49.12 Q, NR 2 6 5 Kacper Stokowski 49.22 Q, NR 3 6 4 Miron Lifintsev Neutral Athletes B 49.44 Q 4 4 2 Ruard van Renen 49.73 Q 5 3 5 Blake Tierney 49.85 Q 6 5 4 Pavel Samusenko Neutral Athletes B 50.20 Q 7 4 4 Mewen Tomac 50.22 Q 8 6 3 Lorenzo Mora 50.30 Q 9 6 7 Denis Popescu 50.35 Q 10 5 2 Ralf Tribuntsov 50.38 Q, NR 11 6 6 Christian Bacico 50.48 Q 12 4 3 Isaac Cooper 50.60 Q 13 6 0 Jack Aikins 50.64 Q 14 5 5 Yohann Ndoye-Brouard 50.80 Q 14 6 9 Ksawery Masiuk 50.80 Q 16 4 5 Masaki Yura 50.81 Q 17 4 8 Oliver Morgan 50.91 R 18 5 6 Ole Braunschweig 50.94 R 19 6 2 Miroslav Knedla 51.13 20 6 8 Cooper Morley 51.14 21 6 1 Enoch Robb 51.21 21 5 8 John Shortt 51.21 23 4 1 Iván Martínez 51.22 24 4 6 Wang Gukailai 51.25 25 3 1 Mantas Kaušpėdas 51.34 26 3 2 Maximillian Wilson 51.37 NR 27 5 3 Andrei Ungur 51.58 28 2 3 Hayden Kwan 51.59 29 3 4 Ádám Jászó 51.65 30 4 9 Roman Mityukov 51.74 31 3 3 Oleksandr Zheltiakov 51.78 NR 32 5 1 Markus Lie 51.79 33 4 0 Evangelos Makrygiannis 52.04 34 3 8 Noe Pantskhava 52.18 NR 35 3 0 Yeziel Morales 52.22 36 3 6 Ulises Saravia 52.26 37 5 7 Xu Yifan 52.27 38 3 7 Chuang Mu-lun 52.38 39 2 8 Dino Hasibović Sirotanović 52.50 NR 40 5 9 Guðmundur Leo Rafnsson 52.69 41 3 9 Martin Perečinský 52.88 42 2 6 Yegor Popov 53.10 43 2 5 Ģirts Feldbergs 53.16 44 4 7 Rasim Oğulcan Gör 53.19 45 1 6 Akash Mani 54.05 46 1 4 Samiul Islam Rafi 54.37 NR 47 2 4 Joaquín Vargas 54.55 48 2 1 Denilson Cyprianos 54.78 NR 49 2 9 Mikhail Kleshko 54.84 NR 50 2 7 Charles Hockin 54.85 51 2 2 Farrel Tangkas 54.94 52 2 0 Mohamad Zubaid 55.18 53 1 5 Tendo Kaumi 58.14 NR 54 1 3 Eid Al-Mujaini 59.85

Semifinals The semifinals were started on 10 December at 18:34. Rank Heat Lane Name Nationality Time Notes124 Hubert Kos 49.03Q, NR225 Miron Lifintsev Neutral Athletes B49.07Q314 Kacper Stokowski 49.20Q, NR416 Lorenzo Mora 49.54Q513 Pavel Samusenko Neutral Athletes B49.88Q615 Ruard Vanrenen 49.89Q717 Isaac Cooper 50.01Q823 Blake Tierney 50.03Q926 Mewen Tomac 50.06R1012 Ralf Tribuntsov 50.25R, NR1111 Yohann Ndoye-Brouard 50.331228 Ksawery Masiuk 50.431321 Jack Aikins 50.46=1422 Denis-Laurean Popescu 50.61=1427 Christian Bacico 50.611618 Masaki Yura 50.95

Final The final was started on 11 December at 17:40. Rank Lane Name Nationality Time Notes 5 Miron Lifintsev Neutral Athletes B48.76WJ 4 Hubert Kos 48.79NR4 Kacper Stokowski 49.16NR42 Pavel Samusenko Neutral Athletes B49.2058 Blake Tierney 49.39NR66 Lorenzo Mora 49.5471 Isaac Cooper 49.6087 Ruard Vanrenen 49.61

References