| Event | 2015 Brooks Snowdonia - Marathon |
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| Name | Cemlyn Jeffreys | Club | Race Number | 909 | Date | 24/10/2015 | |
| Gender | Male | Gender Position | 1016 of 1386 | Category | MOPEN | Category Position | 362 of 467 |
| Pen y Pass | 00:48:26 | Stage Position | 1372 |
| Halfway | 02:04:30 | Stage Position | 876 |
| 23 Miles | 03:56:33 | Stage Position | 1177 |
| Gun Time | 04:43:45 | Overall Position | 1228 |
| Chip Time | 04:41:54 | Chip Position | 1223 |