| Event | 2013 Airtricity Dublin - Marathon |
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| Name | Tom O' Brien | Club | Race Number | 9904 | Date | 28/10/2013 | |
| Gender | Male | Gender Position | 4996 of 8666 | Category | M40 | Category Position | 1080 of 1790 |
| 10K | 00:56:04 | Stage Position | 6317 |
| Half | 01:56:19 | Stage Position | 5832 |
| 20Mile | 02:58:04 | Stage Position | 5310 |
| Gun Time | 04:05:51 | Overall Position | 5936 |
| Chip Time | 04:05:03 | Chip Position | 5979 |