Summer McIntosh broke the women’s 200m butterfly world record on May 16, 2024, clocking a time of 2:02.70 at the Canadian Swimming Open. According to World Aquatics, this mark erased the final remaining world record from the “supersuit” era, a period between 2008 and 2009 when non-textile polyurethane suits significantly inflated swimming speeds.
The 16-year-old Canadian athlete surpassed the previous record of 2:03.00, set by Mireiamatmulín in 2009. McIntosh’s performance in Toronto marks the end of a 15-year holdover from the era of high-tech swimwear before FINA, now World Aquatics, banned the suits in January 2010.
McIntosh now holds world records in the 400m freestyle, 400m individual medley, and the 200m butterfly. The 200m butterfly record is her third world-best time, further establishing her dominance in multiple strokes ahead of the 2024 Paris Olympics.
How the ‘supersuit’ era changed swimming records
Between 2008 and 2009, swimmers wore full-body suits made of polyurethane and neoprene. These materials increased buoyancy and reduced drag, allowing athletes to glide through the water with significantly less effort. According to records from the International Olympic Committee, hundreds of world records fell during this window, creating a statistical anomaly that took over a decade to correct.

The ban on these suits was implemented to return the sport to a focus on athlete physiology rather than equipment. While most records fell within a few years of the 2010 ban, the women’s 200m butterfly remained the last bastion of the polyurethane era. McIntosh’s time of 2:02.70 officially closes that chapter of swimming history.
What makes Summer McIntosh’s achievement significant?
McIntosh is the first swimmer since the 2009 era to break a record that had stood for 15 years. By clocking 2:02.70, she didn’t just beat the record; she lowered it by 0.30 seconds. This is a substantial margin in sprint and middle-distance swimming, where records are often broken by hundredths of a second.
Her versatility is a key factor in her current standing. Holding records in both freestyle and butterfly, as well as the individual medley, puts her in a rare category of swimmers who can compete at a world-record level across different disciplines. This breadth of skill is a primary reason analysts view her as a leading medal contender for the upcoming Olympic Games.
Timeline of the 200m Butterfly World Record
| Year | Athlete | Time | Suit Era |
|---|---|---|---|
| 2009 | Mireiamatmulín (ESP) | 2:03.00 | Polyurethane/Supersuit |
| 2024 | Summer McIntosh (CAN) | 2:02.70 | Textile (Current) |
What happens next for the Canadian star?
Following this record-breaking swim, McIntosh will focus on final preparations for the Paris 2024 Summer Olympics. Her ability to break the last supersuit record suggests she is peaking at the optimal time for the international stage.

The swimming world will now watch to see if she can push the 2:02.70 mark even further during the Olympic finals. With the “supersuit” ghost finally gone from the record books, the current era of swimming is now defined entirely by modern textile standards and human performance.
For official updates on world rankings and upcoming event schedules, fans can monitor the World Aquatics official portal.
Do you think the supersuit era skewed the history of the sport, or was it just an evolution of technology? Share your thoughts in the comments below.