Pan Zhanle’s record‑breaking sprint and the elite times redefining men’s 100 m swimming freestyle

At the Paris 2024 Olympics, China’s Pan Zhanle demolished his world record in the 100‑metre freestyle, and in the months since, Romania’s David Popovici and America’s Jack Alexy have continued to push the event into unexplored territory.

A look at the top‑ten all‑time performances shows how quickly the event has progressed, with eight of the ten fastest swims recorded in the last three years.

Pan’s breakthrough came during the men’s 4 × 100 m relay at the World Aquatics Championships in Doha in February 2024, where he led off in 46.80 seconds, eclipsing the world mark he had set the previous year. Yet even that swim turned out to be a prelude.

In the Olympic final at Paris 2024, the 19‑year‑old sensation exploded off the blocks and hit the turn in 22.28 seconds, then powered home in 24.12 to stop the clock at 46.40 seconds, slicing another four‑tenths from his record.

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According to World Aquatics, Pan finished more than a second clear of Australia’s Rio 2016 gold medallist Kyle Chalmers and former world‑record holder David Popovici.

The win was historic for several reasons. It marked China’s first Olympic gold medal in the men’s 100 m freestyle, and Pan became the first Chinese man to break a swimming world record at the Games. “Today, I beat them all,” Pan told reporters after the race, noting that the victory was a response to sceptics who had doubted the Chinese team.

The Global Times noted that Pan’s 46.40 shaved 0.40 seconds off his previous world record and delivered China’s first gold in the event. His final 50 m split of 24.12 seconds was more than half a second faster than his previous world mark, evidence of how much closing speed the teenager still had in reserve.

After finishing third behind Pan in Paris, David Popovici vowed to regain his world title. At the World Aquatics Championships in Singapore on 31 July 2025, the 20‑year‑old Romanian delivered on that promise.

Popovici blasted out in 22.50 seconds and held his nerve in the closing metres to clock 46.51 seconds, reclaiming the world championship and lowering his European record.

European Aquatics reported that the swim, a championship record, moved Popovici to within 0.11 seconds of Pan’s world record. He now owns three of the ten fastest times in history (46.51, 46.71 and 46.84) and is the only swimmer to appear five times on the all‑time top‑10 list.

Popovici’s success in Singapore capped a remarkable summer. In late June, he claimed the inaugural European U23 title in Samorin, Slovakia, in 46.71 seconds, slashing his continental mark of 46.86 and posting the third‑fastest time ever. Weeks later, he added the 200 m freestyle world title in Singapore, completing the freestyle double.

World Aquatics has suggested that Popovici’s European record could soon yield to an even faster swim. In a feature ahead of the world championships, the federation noted that Popovici’s “unrested world‑leading time of 46.71 seconds” at the European U23 Championships illustrated that the world record is “absolutely possible” for him.

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Popovici himself believes the world mark is within reach and has credited a relaxed, positive mindset for his improvement.

Emerging stars

The 2025 season has seen the emergence of Jack Alexy, an American sprinter who captured silver behind Popovici in Singapore with 46.92 seconds and later matched that time in a relay anchor leg.

At the world championships, Alexy recorded 46.81 seconds in the individual 100 m final, moving into the top five all‑time. He also broke Caeleb Dressel’s American record earlier in 2024 with a 46.86 in Paris, highlighting the depth of U.S. sprinting.

Brazil’s César Cielo, who set the long‑standing world record of 46.91 seconds at the 2009 world championships, remains on the top‑10 list but has been pushed down to ninth by the recent flurry of super‑fast swims. Cielo’s record stood for 14 years before Pan first broke it in 2023; he is now one of only two pre‑2022 swimmers still in the top tier.