| Event | 2013 Airtricity Dublin - Marathon |
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| Name | Liam O' Brien | Club | Crusaders AC | Race Number | 16825 | Date | 28/10/2013 |
| Gender | Male | Gender Position | 3799 of 8666 | Category | M40 | Category Position | 825 of 1790 |
| 10K | 00:51:19 | Stage Position | 3705 |
| Half | 01:47:57 | Stage Position | 3547 |
| 20Mile | 02:49:53 | Stage Position | 3885 |
| Gun Time | 03:53:24 | Overall Position | 4327 |
| Chip Time | 03:51:30 | Chip Position | 4269 |