| Event | 2013 Airtricity Dublin - Marathon |
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| Name | John Williams | Club | Race Number | 9735 | Date | 28/10/2013 | |
| Gender | Male | Gender Position | 8438 of 8666 | Category | MS | Category Position | 2517 of 2562 |
| 10K | 01:03:45 | Stage Position | 10034 |
| Half | 02:15:33 | Stage Position | 10025 |
| 20Mile | 04:10:39 | Stage Position | 11507 |
| Gun Time | 06:01:00 | Overall Position | 11804 |
| Chip Time | 05:59:17 | Chip Position | 11748 |