| Event | 2012 Dublin - Marathon |
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| Name | Dermot Twomey | Club | Race Number | 2909 | Date | 29/10/2012 | |
| Gender | Male | Gender Position | 618 of 8779 | Category | MS | Category Position | 256 of 3002 |
| to 10K | 00:40:24 | Stage Position | 187 |
| 10K to Half | 00:45:17 | Stage Position | 221 |
| Half to 20Mile | 00:50:24 | Stage Position | 877 |
| Gun Time | 03:08:07 | Overall Position | 651 |
| Chip Time | 03:07:49 | Chip Position | 638 |