1500m U18 Men, Heat:1 of 2 ; Official result since 12:21
CBP 4:00.65 Mark Christie
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 3 | 809 | KELLY Cian | St. Abbans A.C. | 4:23.27 | Q | |||
| 2 | 10 | 345 | GILES Craig | Clonliffe Harriers A.C. | 4:23.38 | Q | |||
| 3 | 2 | 351 | MAGUIRE James | Dundrum South Dublin A.C. | 4:23.40 | Q | |||
| 4 | 9 | 181 | MCSTAY Thomas | Galway City Harriers A.C. | 4:23.73 | Q | |||
| 5 | 5 | 344 | O'CONNOR Mark | Metro/St. Brigid's A.C. | 4:24.30 | q | |||
| 6 | 1 | 815 | MADIGAN Damien | North Cork A.C. | 4:24.39 | ||||
| 7 | 7 | 64 | GRACEY Peter | Beechmount Harriers A.C | 4:24.70 | ||||
| 8 | 4 | 616 | ROGERS Aedan | United Striders A.C. | 4:24.90 | ||||
| 9 | 11 | 46 | MCELWAINE Charlie | Lifford Strabane A.C. | 4:29.45 | ||||
| 10 | 6 | 617 | O'CONNOR Eoin | Kildare A.C. | 4:33.62 | ||||
| 11 | 8 | 182 | STEPHENS Oisin | Roscommon A.C. | 4:39.24 |