| RK | LN | Name | Time | Gap | FINA | Q? |
|---|---|---|---|---|---|---|
| 1 | 3 | Clark Maya (2013)Iron Swim SE | 00:39.65 | - | 190 | |
| 2 | 2 | Goron Julianna (2015)Iron Swim SE | 00:40.73 | 00:01.08 | 176 | |
| 3 | 7 | Kiss Alíz (2015)Iron Swim SE | 00:42.14 | 00:02.49 | 159 | |
| 4 | 6 | Clark Millie (2016)Iron Swim SE | 00:42.61 | 00:02.96 | 153 | |
| 5 | 5 | Erdélyi Liza Csenge (2017)Iron Swim SE | 00:44.15 | 00:04.50 | 138 | |
| 6 | 4 | Szántó Emma (2017)Iron Swim SE | 00:44.25 | 00:04.60 | 137 |