| Event | 2012 Dublin - Marathon |
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| Name | Mark O' Duffy | Club | Race Number | 3911 | Date | 29/10/2012 | |
| Gender | Male | Gender Position | 555 of 8779 | Category | MS | Category Position | 235 of 3002 |
| to 10K | 00:44:53 | Stage Position | 916 |
| 10K to Half | 00:49:52 | Stage Position | 975 |
| Half to 20Mile | 00:48:24 | Stage Position | 594 |
| Gun Time | 03:05:42 | Overall Position | 581 |
| Chip Time | 03:05:27 | Chip Position | 571 |