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.
Semifinals.
The semifinals were started on 10 December at 18:34.
Final.
The final was started on 11 December at 17:40.