2026 Pan Pacific Swimming Championships – Women's 400 metre individual medley

The women's 400 metre individual medley competition at the 2026 Pan Pacific Swimming Championships took place on August 13 at the William Woollett Jr. Aquatics Center in Irvine, California. The 2018 champion was Yui Ohashi of Japan.

Summer McIntosh of Canada won her first (and only) gold medal at the Pan Pacific Championships as part of her career.

Records Prior to this competition, the existing world and Pan Pacific records were as follows:

World record4:23.65Victoria, CanadaJune 11, 2025Pan Pacific Championships record4:31.99Gold Coast, AustraliaAugust 22, 2014

Results All times are in minutes and seconds.

KEY:CRChampionships recordNRNational recordPBPersonal bestSBSeasonal best

Heats The heats were held on 13 August.

Only two swimmers from each country may advance to the A or B final. If a country not qualify any swimmer to the A final, that same country may qualify up to three swimmers to the B final.

+ Heat results Rank Heat Lane Swimmer Nation Time Notes 1 2 3 Agostina Hein 4:35.43 QA 2 3 5 Jenna Forrester 4:35.45 QA 3 3 4 Summer McIntosh 4:35.56 QA 4 2 4 Katie Grimes 4:35.72QA 5 3 6 Alex Walsh 4:36.11 QA 6 2 5 Emma Weyant 4:37.04 QB 7 2 6 Yu Yiting 4:37.74 QA 8 3 3 Mio Narita 4:37.96 QA 9 3 2 Leah Hayes 4:38.97 QB 10 2 2 Waka Kobori 4:40.18 QA 11 2 1 Yang Peiqi 4:41.09 QB 12 3 7 Tara Kinder 4:43.26 QB 13 2 7 Caroline Bricker 4:43.70 14 3 1 Misa Okuzono 4:49.23 QB 15 1 4 Elizabeth Dekkers 4:52.36 QB 16 1 3 Stephanie Iannaccone 4:53.90 QB – 3 8 Emma Finlin – 1 5 Rebecca Mann

B Final

The B final was held on August 13 from 19:01.

Rank Name Nationality Time Notes 9 Yang Peiqi 4:36.20 10 Leah Hayes 4:37.26 11 Tara Kinder 4:38.69 12 Emma Weyant 4:38.94 13 Misa Okuzono 4:46.32 14 Elizabeth Dekkers 4:50.94 15 Stephanie Iannaccone 4:55.56

A Final

Rank Name Nationality Time Notes Summer McIntosh 4:28.01 CR Jenna Forrester 4:31.50 Agostina Hein 4:32.54 NR 4 Yu Yiting 4:33.09 5 Alex Walsh 4:33.73 6 Katie Grimes 4:35.67 7 Waka Kobori 4:39.23 8 Mio Narita 4:39.49

McIntosh's winning time of 4:28.01 broke Elizabeth Beisel's previous Pan Pacific Championships record of 4:31.99 by 3.98 seconds.

References