| Event | 2012 Dublin - Marathon |
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| Name | Declan O' Brien | Club | Race Number | 9641 | Date | 29/10/2012 | |
| Gender | Male | Gender Position | 7705 of 8779 | Category | MS | Category Position | 2661 of 3002 |
| to 10K | 01:00:40 | Stage Position | 8643 |
| 10K to Half | 01:06:04 | Stage Position | 8025 |
| Half to 20Mile | 01:24:54 | Stage Position | 10503 |
| Gun Time | 04:58:30 | Overall Position | 10292 |
| Chip Time | 04:56:14 | Chip Position | 10143 |