| Event | 2012 Dublin - Marathon |
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| Name | Grainne O' Sullivan | Club | Race Number | 14875 | Date | 29/10/2012 | |
| Gender | Female | Gender Position | 2986 of 3598 | Category | FS | Category Position | 1224 of 1377 |
| to 10K | 01:03:30 | Stage Position | 9693 |
| 10K to Half | 01:12:11 | Stage Position | 9949 |
| Half to 20Mile | 01:34:53 | Stage Position | 11169 |
| Gun Time | 05:32:38 | Overall Position | 11195 |
| Chip Time | 05:32:21 | Chip Position | 11094 |