2023 WORLD AQUATICS CHAMPIONSHIPS
- July 23 to 30, 2023
- Fukuoka, Japan
- Marine Messe Fukuoka
- LCM (50m)
- WORLD CHAMPS WATCH PARTY – DAILY
- Meet Central
- SwimSwam Preview Index
- Entry Book
- Live Results (Omega)
- Day 1 Prelims Live Recap | Day 1 Finals Live Recap
- Day 2 Prelims Live Recap | Day 2 Finals Live Recap
- Day 3 Prelims Live Recap | Day 3 Finals Live Recap
- Day 4 Prelims Live Recap | Day 4 Finals Live Recap
- Day 5 Prelims Live Recap | Day 5 Finals Live Recap
- Day 6 Prelims Live Recap | Day 6 Finals Live Recap
- Day 7 Prelims Live Recap | Day 7 Finals Live Recap
- Day 8 Prelims Live Recap | Day 8 Finals Live Recap
In the finals of the women’s 400 IM at the 2023 World Championships, Canadian swimmer Summer McIntosh was dominant from start to finish, winning by 4.30 seconds. Her time of 4:27.11 crushed Katinka Hosszu‘s old championship record time of 4:29.33 from 2017, and also was just a little over her own world record time of 4:25.87.
McIntosh’s performance at Worlds was also the third-fastest performance in the history of the women’s 400 IM.
All-Time Top Performances, Women’s 400 IM:
- Summer McIntosh, Canada — 4:25.87 (2023)
- Katinka Hosszu, Hungary — 4:26.36 (2016)
- Summer McIntosh, Canada — 4:27.11 (2023)
- Ye Shiwen, China — 4:28.43 (2012)
- Katinka Hosszu, Hungary — 4:28.58 (2016)
Compared to her World Record, McIntosh was slower in every aspect of the race except for breaststroke. On the contrary though, she was significantly faster than Hosszu’s championship record in every stroke except for again, breaststroke.
Splits Comparison:
| Summer McIntosh, 2023 World Championships | Summer McIntosh, 2023 Canadian Trials (world record) | Katinka Hosszu, 2017 World Championships (former World Championship record | |
| Fly | 59.84 | 59.47 | 1:01.16 |
| Back | 1:07.35 | 1:06.92 | 1:07.58 |
| Breast | 1:18.70 | 1:18.92 | 1:18.27 |
| Free | 1:01.21 | 1:00.56 | 1:02.32 |
| Total | 4:27.11 | 4:25.86 | 4:29.33 |
This 400 IM race is McIntosh’s second gold medal of the World Championships. She previously won gold in the 200 fly, took bronze in the 200 free, and finished fourth in the 400 IM. Now, she has a total of four World Championships golds, which has her passing Kylie Masse as the winningest Canadian swimmer in Worlds history.
She was probably conserving energy for the medley relay
Summer’s new breaststroke looks mighty! She’s more driving forward through the water rather than rising so high above it. It didn’t pay a dividend today, but it well may later in the 4, if she keeps it. What IS exciting is that — again, if she keeps it — it definitely IS going to be of great and quicker service to her in the 2 IM. She has so needed a little stronger push there to get her clear of the 2:07-2:08 cluster of women… and push her to that WR!
Exceptional swims, Summer! All you crazy, hard working swimmers, take a few weeks, have some fun, would ya!?!? Thanks to all, and to the gracious, wondrous Japanese hosts, for… Read more »
Was really hoping Grimes could get the AR. So close this year with 2 4:31s. Next year!
I hope the reason McIntosh isn’t going to the PanAm games is because she’s going to the World Cup