| Event | 2011 Snowdonia - Marathon |
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| Name | Jefferson Mason | Club | northampton road runners | Race Number | 992 | Date | 29/10/2011 |
| Gender | Male | Gender Position | 399 of 1147 | Category | M40+ | Category Position | 96 of 219 |
| Gun Time | 03:57:37 | Overall Position | 447 |
| Chip Time | 03:57:02 | Chip Position | 446 |