| Event | 2012 Dublin - Marathon |
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| Name | Derek Mac Kessy | Club | Race Number | 4445 | Date | 29/10/2012 | |
| Gender | Male | Gender Position | 2389 of 8779 | Category | MS | Category Position | 846 of 3002 |
| to 10K | 00:49:57 | Stage Position | 2977 |
| 10K to Half | 00:54:43 | Stage Position | 2612 |
| Half to 20Mile | 00:55:56 | Stage Position | 2583 |
| Gun Time | 03:35:22 | Overall Position | 2583 |
| Chip Time | 03:34:05 | Chip Position | 2538 |