| Event | 2015 Brooks Snowdonia - Marathon |
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| Name | David John Williams | Club | Race Number | 1852 | Date | 24/10/2015 | |
| Gender | Male | Gender Position | 1230 of 1386 | Category | M50+ | Category Position | 147 of 179 |
| Pen y Pass | 00:49:35 | Stage Position | 1469 |
| Halfway | 02:10:39 | Stage Position | 1085 |
| 23 Miles | 04:18:55 | Stage Position | 1508 |
| Gun Time | 05:12:18 | Overall Position | 1562 |
| Chip Time | 05:10:34 | Chip Position | 1558 |