| Event | 2015 Chester - Half Marathon |
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| Name | Derek Williams | Club | Race Number | 3626 | Date | 17/05/2015 | |
| Gender | Male | Gender Position | 488 of 3427 | Category | MV50 | Category Position | 32 of 291 |
| 10K | 00:44:30 | Stage Position | 648 |
| Halfway | 00:48:18 | Stage Position | 633 |
| 10Mile | 01:12:25 | Stage Position | 556 |
| 20K | 01:30:39 | Stage Position | 528 |
| Gun Time | 01:35:04 | Overall Position | 517 |
| Chip Time | 01:34:35 | Chip Position | 529 |