| Event | 2012 Dublin - Half Marathon |
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| Name | David O' Brien | Club | Raheny Shamrock | Race Number | 1124 | Date | 15/09/2012 |
| Gender | Male | Gender Position | 3532 of 3837 | Category | M50 | Category Position | 116 of 132 |
| Gun Time | 02:24:23 | Overall Position | 5333 |
| Chip Time | 02:15:55 | Chip Position | 5300 |