| Event | 2012 Dublin - Marathon |
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| Name | Thomas O' Brien | Club | Race Number | 8974 | Date | 29/10/2012 | |
| Gender | Male | Gender Position | 3270 of 8779 | Category | MS | Category Position | 1170 of 3002 |
| to 10K | 00:52:51 | Stage Position | 4297 |
| 10K to Half | 00:58:59 | Stage Position | 4656 |
| Half to 20Mile | 00:58:32 | Stage Position | 3497 |
| Gun Time | 03:44:52 | Overall Position | 3642 |
| Chip Time | 03:44:31 | Chip Position | 3678 |