| Event | 2012 Dublin - Marathon |
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| Name | Brian Grehan | Club | Race Number | 3868 | Date | 29/10/2012 | |
| Gender | Male | Gender Position | 355 of 8779 | Category | M35 | Category Position | 84 of 2079 |
| to 10K | 00:41:35 | Stage Position | 325 |
| 10K to Half | 00:46:53 | Stage Position | 399 |
| Half to 20Mile | 00:48:11 | Stage Position | 567 |
| Gun Time | 02:59:29 | Overall Position | 372 |
| Chip Time | 02:59:27 | Chip Position | 384 |