| Event | 2013 Airtricity Dublin - Marathon |
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| Name | Rory O' Brien | Club | Race Number | 3545 | Date | 28/10/2013 | |
| Gender | Male | Gender Position | 1900 of 8666 | Category | MS | Category Position | 576 of 2562 |
| 10K | 00:45:07 | Stage Position | 1085 |
| Half | 01:34:17 | Stage Position | 973 |
| 20Mile | 02:30:09 | Stage Position | 1254 |
| Gun Time | 03:31:24 | Overall Position | 2049 |
| Chip Time | 03:30:59 | Chip Position | 2117 |