| Women's 400m Individual Medley / Women's 400m Individual Medley - Heat 1 / Women's 400m Individual Medley - Heats / Munhak Park Tae-hwan Aquatics Center | ||||||||
|---|---|---|---|---|---|---|---|---|
| Rank | Lane | NOC | Name | R.T. | Time | Time Behind | ||
| 1 | SHIMIZU Sakiko | 0.75 | 4:40.49 | |||||
| 2 | KIM Seoyeong | 0.66 | 4:44.27 | |||||
| 3 | NAM Yoosun | 0.80 | 4:45.82 | |||||
| 4 | TAKAHASHI Miho | 0.72 | 4:46.58 | |||||
| 5 | TAN Jing E | 0.79 | 5:05.62 | |||||
