| Event | 2015 Brooks Snowdonia - Marathon |
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| Name | David Williamson | Club | Race Number | 1877 | Date | 24/10/2015 | |
| Gender | Male | Gender Position | 1295 of 1386 | Category | M50+ | Category Position | 161 of 179 |
| Pen y Pass | 00:50:51 | Stage Position | 1561 |
| Halfway | 02:12:42 | Stage Position | 1132 |
| 23 Miles | 04:34:18 | Stage Position | 1657 |
| Gun Time | 05:35:14 | Overall Position | 1704 |
| Chip Time | 05:33:42 | Chip Position | 1701 |