| Event | 2012 Dublin - Marathon |
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| Name | Colm O' Brien | Club | Newry Runners | Race Number | 11581 | Date | 29/10/2012 |
| Gender | Male | Gender Position | 6690 of 8779 | Category | M45 | Category Position | 795 of 1019 |
| to 10K | 00:55:55 | Stage Position | 6047 |
| 10K to Half | 01:03:00 | Stage Position | 6787 |
| Half to 20Mile | 01:15:30 | Stage Position | 9128 |
| Gun Time | 04:30:13 | Overall Position | 8596 |
| Chip Time | 04:29:28 | Chip Position | 8544 |