400m SEN Women, Heat:2 of 3 ; Official result since 19:40
Joanne Cuddihy 50.73
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 4 | 122 | DENNY Sinead | Dundrum South Dublin A.C. | 54.78 | Q | |||
| 2 | 5 | 110 | MCCALLION Ciara | Clonliffe Harriers A.C. | 55.26 | Q | |||
| 3 | 6 | 95 | O'REILLY Mollie | Dundrum South Dublin A.C. | 55.68 | q | |||
| 4 | 3 | 266 | BECHTINA Snezana | Clonliffe Harriers A.C. | 57.42 | ||||
| 5 | 2 | 379 | BECKER Sophie | St. Joseph's A.C. | 57.81 | ||||
| 6 | 7 | 255 | DORAN Karla | Donore Harriers | 1:06.53 |