| Event | 2013 Airtricity Dublin - Marathon |
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| Name | Tom O' Brien | Club | Race Number | 5328 | Date | 28/10/2013 | |
| Gender | Male | Gender Position | 2179 of 8666 | Category | M45 | Category Position | 254 of 1107 |
| 10K | 00:46:49 | Stage Position | 1504 |
| Half | 01:39:10 | Stage Position | 1542 |
| 20Mile | 02:37:09 | Stage Position | 1992 |
| Gun Time | 03:35:27 | Overall Position | 2373 |
| Chip Time | 03:35:21 | Chip Position | 2482 |