| Event | 2012 Dublin - Marathon |
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| Name | Stephen O' Brien | Club | Race Number | 11594 | Date | 29/10/2012 | |
| Gender | Male | Gender Position | 2733 of 8779 | Category | MS | Category Position | 977 of 3002 |
| to 10K | 00:50:31 | Stage Position | 3237 |
| 10K to Half | 00:54:44 | Stage Position | 2622 |
| Half to 20Mile | 00:57:19 | Stage Position | 3013 |
| Gun Time | 03:40:03 | Overall Position | 2999 |
| Chip Time | 03:39:09 | Chip Position | 2978 |