| Event | 2013 Airtricity Dublin - Marathon |
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| Name | John O' Byrne | Club | Race Number | 7304 | Date | 28/10/2013 | |
| Gender | Male | Gender Position | 7204 of 8666 | Category | M45 | Category Position | 917 of 1107 |
| 10K | 00:55:55 | Stage Position | 6234 |
| Half | 01:58:13 | Stage Position | 6295 |
| 20Mile | 03:15:57 | Stage Position | 7956 |
| Gun Time | 04:44:50 | Overall Position | 9489 |
| Chip Time | 04:44:21 | Chip Position | 9500 |