| Event | 2012 Dublin - Half Marathon |
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| Name | Grattan O' Brien | Club | Crusaders AC | Race Number | 6541 | Date | 15/09/2012 |
| Gender | Male | Gender Position | 264 of 3837 | Category | MS | Category Position | 118 of 1630 |
| Gun Time | 01:28:29 | Overall Position | 274 |
| Chip Time | 01:28:07 | Chip Position | 268 |