| Event | 2016 Brooks Snowdonia - Marathon |
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| Name | Cerys Williams | Club | Race Number | 3040 | Date | 29/10/2016 | |
| Gender | Female | Gender Position | 431 of 619 | Category | F45 | Category Position | 77 of 113 |
| Pen y Pass | 00:53:43 | Stage Position | 1850 |
| Halfway | 02:25:27 | Stage Position | 1746 |
| 23 Miles | 04:31:39 | Stage Position | 1746 |
| Gun Time | 05:25:11 | Overall Position | 1760 |
| Chip Time | 05:21:40 | Chip Position | 1749 |