| Event | 2017 Brooks Snowdonia - Marathon |
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| Name | George Biffen | Club | Race Number | 243 | Date | 28/10/2017 | |
| Gender | Male | Gender Position | 681 of 1596 | Category | MOPEN | Category Position | 247 of 506 |
| Pen-y-Pass | 00:45:07 | Stage Position | 1051 |
| 14Miles | 02:05:59 | Stage Position | 895 |
| 23Miles | 03:35:44 | Stage Position | 764 |
| Gun Time | 04:17:08 | Overall Position | 787 |
| Chip Time | 04:15:17 | Chip Position | 795 |