1500m Men Heats, Heat:1 of 2 ; Official result since 16:44
Marcus O'Sullivan 3.35.4 (1988)
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 5 | 178 | LANDERS Damien | Ennis Track A.C. | 4:03.53 | Q | |||
| 2 | 3 | 205 | MCCANN Luke | Dundrum South Dublin A.C. | 4:03.63 | Q | |||
| 3 | 8 | 36 | CAMPBELL Garry | Dunleer A.C. | 4:03.77 | Q | |||
| 4 | 4 | 182 | LEDINGHAM James | Kilkenny City Harriers | 4:04.04 | Q | |||
| 5 | 1 | 293 | OWENS Richard | Clonliffe Harriers A.C. | 4:04.60 | q | |||
| 6 | 6 | 144 | HEWSON Robert | Kildare A.C. | 4:11.56 | q | |||
| 7 | 7 | 129 | HAMILTON James | Ballymena Runners AC | 4:11.84 | ||||
| 8 | 2 | 291 | O'SHEA Mark | Drogheda & District A.C. | 4:13.27 |