| Event | 2012 Dublin - Marathon |
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| Name | Joseph O' Brien | Club | Race Number | 14783 | Date | 29/10/2012 | |
| Gender | Male | Gender Position | 6011 of 8779 | Category | M40 | Category Position | 1149 of 1608 |
| to 10K | 00:57:39 | Stage Position | 7361 |
| 10K to Half | 01:05:11 | Stage Position | 7748 |
| Half to 20Mile | 01:08:40 | Stage Position | 7489 |
| Gun Time | 04:17:34 | Overall Position | 7441 |
| Chip Time | 04:17:32 | Chip Position | 7492 |