| Event | 2013 Airtricity Dublin - Marathon |
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| Name | Brian O' Brien | Club | Race Number | 5045 | Date | 28/10/2013 | |
| Gender | Male | Gender Position | 4954 of 8666 | Category | MS | Category Position | 1470 of 2562 |
| 10K | 00:53:29 | Stage Position | 4814 |
| Half | 01:53:16 | Stage Position | 4939 |
| 20Mile | 02:57:53 | Stage Position | 5274 |
| Gun Time | 04:05:05 | Overall Position | 5874 |
| Chip Time | 04:01:53 | Chip Position | 5692 |