| Event | 2012 Dublin - Half Marathon |
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| Name | Derek O'Brien | Club | BGW | Race Number | 8414 | Date | 15/09/2012 |
| Gender | Male | Gender Position | 2698 of 3837 | Category | M35 | Category Position | 666 of 889 |
| Gun Time | 02:02:21 | Overall Position | 3471 |
| Chip Time | 01:57:01 | Chip Position | 3504 |