| Event | 2012 Snowdonia - Marathon |
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| Name | Mark Atherton | Club | Meirionnydd Running Club | Race Number | 142 | Date | 27/10/2012 |
| Gender | Male | Gender Position | 109 of 1212 | Category | M40+ | Category Position | 34 of 262 |
| Half Marathon | 01:32:31 | Stage Position | 98 |
| Gun Time | 03:26:49 | Overall Position | 115 |
| Chip Time | 03:26:38 | Chip Position | 116 |