| Event | 2015 SSE Airtricity Dublin - Marathon |
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| Name | John Brennan | Club | None | Race Number | 305 | Date | 26/10/2015 |
| Gender | Male | Gender Position | 1647 of 8910 | Category | MS | Category Position | 449 of 2274 |
| 10K | 00:49:14 | Stage Position | 2312 |
| Halfway | 01:43:24 | Stage Position | 2285 |
| 30K | 02:28:17 | Stage Position | 2218 |
| Gun Time | 03:28:39 | Overall Position | 1774 |
| Chip Time | 03:27:08 | Chip Position | 1715 |