| Event | 2015 Chester - Half Marathon |
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| Name | Sion Williams | Club | Race Number | 2376 | Date | 17/05/2015 | |
| Gender | Male | Gender Position | 2831 of 3427 | Category | MSEN | Category Position | 1562 of 1837 |
| 10K | 01:01:33 | Stage Position | 4541 |
| Halfway | 01:07:02 | Stage Position | 4539 |
| 10Mile | 01:41:14 | Stage Position | 4426 |
| 20K | 02:03:57 | Stage Position | 4068 |
| Gun Time | 02:14:00 | Overall Position | 4020 |
| Chip Time | 02:07:39 | Chip Position | 3903 |