| Event | 2013 Airtricity Dublin - Marathon |
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| Name | Derek Mac Kessy | Club | West Limerick A.C | Race Number | 16679 | Date | 28/10/2013 |
| Gender | Male | Gender Position | 4594 of 8666 | Category | MS | Category Position | 1370 of 2562 |
| 10K | 00:49:32 | Stage Position | 2914 |
| Half | 01:45:48 | Stage Position | 3177 |
| 20Mile | 02:53:16 | Stage Position | 4443 |
| Gun Time | 04:00:10 | Overall Position | 5384 |
| Chip Time | 03:58:55 | Chip Position | 5329 |