| Event | 2015 SSE Airtricity Dublin - Marathon |
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| Name | William O Brien | Club | None | Race Number | 7087 | Date | 26/10/2015 |
| Gender | Male | Gender Position | 5838 of 8910 | Category | MS | Category Position | 1503 of 2274 |
| 10K | 00:54:42 | Stage Position | 5176 |
| Halfway | 01:54:30 | Stage Position | 5131 |
| 30K | 02:47:09 | Stage Position | 5456 |
| Gun Time | 04:18:33 | Overall Position | 7271 |
| Chip Time | 04:18:13 | Chip Position | 7370 |