| Event | 2013 Airtricity Dublin - Marathon |
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| Name | David O' Brien | Club | Race Number | 9824 | Date | 28/10/2013 | |
| Gender | Male | Gender Position | 7960 of 8666 | Category | MS | Category Position | 2376 of 2562 |
| 10K | 01:04:08 | Stage Position | 10125 |
| Half | 02:17:30 | Stage Position | 10250 |
| 20Mile | 03:45:10 | Stage Position | 10634 |
| Gun Time | 05:10:58 | Overall Position | 10827 |
| Chip Time | 05:08:43 | Chip Position | 10750 |