| Event | 2013 Airtricity Dublin - Marathon |
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| Name | David O' Brien | Club | Raheny Shamrock A.C. | Race Number | 15373 | Date | 28/10/2013 |
| Gender | Male | Gender Position | 7515 of 8666 | Category | M50 | Category Position | 493 of 583 |
| 10K | 01:07:27 | Stage Position | 10901 |
| Half | 02:22:32 | Stage Position | 10787 |
| 20Mile | 03:40:28 | Stage Position | 10367 |
| Gun Time | 04:52:57 | Overall Position | 10044 |
| Chip Time | 04:52:21 | Chip Position | 10035 |