| Event | 2015 Chester - Half Marathon |
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| Name | Mark Duffey | Club | City of Chester Triathlon Club | Race Number | 1092 | Date | 17/05/2015 |
| Gender | Male | Gender Position | 2086 of 3427 | Category | MV50 | Category Position | 160 of 291 |
| 10K | 00:54:16 | Stage Position | 2868 |
| Halfway | 00:58:54 | Stage Position | 2820 |
| 10Mile | 01:28:50 | Stage Position | 2680 |
| 20K | 01:50:45 | Stage Position | 2536 |
| Gun Time | 01:59:33 | Overall Position | 2594 |
| Chip Time | 01:55:26 | Chip Position | 2515 |