| Event | 2013 Airtricity Dublin - Marathon |
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| Name | Gary O' Brien | Club | Race Number | 2214 | Date | 28/10/2013 | |
| Gender | Male | Gender Position | 2242 of 8666 | Category | M35 | Category Position | 625 of 2039 |
| 10K | 00:43:18 | Stage Position | 727 |
| Half | 01:35:21 | Stage Position | 1124 |
| 20Mile | 02:36:27 | Stage Position | 1928 |
| Gun Time | 03:36:09 | Overall Position | 2445 |
| Chip Time | 03:35:54 | Chip Position | 2535 |