| Event | 2012 Dublin - Half Marathon |
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| Name | Gerard O' Brien | Club | tallaght | Race Number | 8037 | Date | 15/09/2012 |
| Gender | Male | Gender Position | 270 of 3837 | Category | M55 | Category Position | 5 of 84 |
| Gun Time | 01:28:41 | Overall Position | 280 |
| Chip Time | 01:28:23 | Chip Position | 283 |