| Event | 2013 Airtricity Dublin - Marathon |
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| Name | John O' Brien | Club | Race Number | 14966 | Date | 28/10/2013 | |
| Gender | Male | Gender Position | 8659 of 8666 | Category | M55 | Category Position | 292 of 292 |
| 10K | 01:35:15 | Stage Position | 12351 |
| Half | 03:47:23 | Stage Position | 12392 |
| 20Mile | 06:19:12 | Stage Position | 12323 |
| Gun Time | 08:29:11 | Overall Position | 12340 |
| Chip Time | 08:29:11 | Chip Position | 12276 |