400m U19 Women, Heat:1 of 2 ; Official result since 11:38
CBP 55.28 Joanne Cuddihy
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 5 | 989 | NIAMH MALONE | U19 | 1:00.06 | Q | |||
| 2 | 4 | 927 | MAGEE Katie | Dundrum South Dublin A.C. | 1:00.55 | Q | |||
| 3 | 3 | 512 | O'CONNOR Annie | Kilkenny City Harriers A.C. | 1:00.55 | Q | |||
| 4 | 6 | 478 | WALSH Katie | Carraig-Na-Bhfear A.C. | 1:00.63 | q | |||
| 5 | 7 | 709 | MCGRATH Aimee | Newbridge A.C. | 1:00.74 | q |