| Event | 2013 Airtricity Dublin - Marathon |
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| Name | Michael Grehan | Club | Race Number | 524 | Date | 28/10/2013 | |
| Gender | Male | Gender Position | 5010 of 8666 | Category | M45 | Category Position | 622 of 1107 |
| 10K | 00:59:24 | Stage Position | 8264 |
| Half | 02:04:13 | Stage Position | 7951 |
| 20Mile | 03:08:17 | Stage Position | 6969 |
| Gun Time | 04:06:06 | Overall Position | 5960 |
| Chip Time | 04:05:26 | Chip Position | 6019 |