| Event | 2012 Dublin - Marathon |
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| Name | Brian O' Riordan | Club | Race Number | 4844 | Date | 29/10/2012 | |
| Gender | Male | Gender Position | 799 of 8779 | Category | MS | Category Position | 311 of 3002 |
| to 10K | 00:46:17 | Stage Position | 1366 |
| 10K to Half | 00:50:40 | Stage Position | 1310 |
| Half to 20Mile | 00:51:13 | Stage Position | 1124 |
| Gun Time | 03:12:57 | Overall Position | 837 |
| Chip Time | 03:12:31 | Chip Position | 830 |