| Event | 2013 Airtricity Dublin - Marathon |
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| Name | Rob O' Brien | Club | Race Number | 4629 | Date | 28/10/2013 | |
| Gender | Male | Gender Position | 2648 of 8666 | Category | MS | Category Position | 798 of 2562 |
| 10K | 00:51:47 | Stage Position | 4014 |
| Half | 01:49:04 | Stage Position | 3768 |
| 20Mile | 02:47:10 | Stage Position | 3450 |
| Gun Time | 03:41:29 | Overall Position | 2922 |
| Chip Time | 03:39:57 | Chip Position | 2944 |