| Event | 2010 Snowdonia - Marathon |
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| Name | Mark O''sullivan | Club | Race Number | 1853 | Date | 30/10/2010 | |
| Gender | Male | Gender Position | 398 of 1047 | Category | M40+ | Category Position | 88 of 201 |
| Gun Time | 03:59:39 | Overall Position | 445 |
| Chip Time | 03:59:10 | Chip Position | 454 |