| Event | 2013 Airtricity Dublin - Marathon |
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| Name | Alex O' Brien | Club | Race Number | 2265 | Date | 28/10/2013 | |
| Gender | Male | Gender Position | 2359 of 8666 | Category | MS | Category Position | 716 of 2562 |
| 10K | 00:48:36 | Stage Position | 2225 |
| Half | 01:42:57 | Stage Position | 2267 |
| 20Mile | 02:38:20 | Stage Position | 2148 |
| Gun Time | 03:37:56 | Overall Position | 2588 |
| Chip Time | 03:37:05 | Chip Position | 2641 |