| Event | 2015 Chester - Half Marathon |
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| Name | Mark OCallaghan | Club | Race Number | 3915 | Date | 17/05/2015 | |
| Gender | Male | Gender Position | 212 of 3427 | Category | MSEN | Category Position | 133 of 1837 |
| 10K | 00:40:56 | Stage Position | 241 |
| Halfway | 00:44:27 | Stage Position | 230 |
| 10Mile | 01:07:22 | Stage Position | 221 |
| 20K | 01:24:45 | Stage Position | 216 |
| Gun Time | 01:28:42 | Overall Position | 221 |
| Chip Time | 01:28:35 | Chip Position | 225 |