| Event | 2012 Dublin - Marathon |
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| Name | Brian Leahy | Club | Board Gais Energy | Race Number | 3933 | Date | 29/10/2012 |
| Gender | Male | Gender Position | 21 of 8779 | Category | MS | Category Position | 17 of 3002 |
| to 10K | 00:34:44 | Stage Position | 22 |
| 10K to Half | 00:38:58 | Stage Position | 25 |
| Half to 20Mile | 00:39:36 | Stage Position | 29 |
| Gun Time | 02:30:49 | Overall Position | 22 |
| Chip Time | 02:30:49 | Chip Position | 22 |