| Event | 2017 SSE Airtricity Dublin - Marathon |
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| Name | Derek O' Brien | Club | Race Number | 4767 | Date | 29/10/2017 | |
| Gender | Male | Gender Position | 6884 of 10700 | Category | M40 | Category Position | 1708 of 2504 |
| Team | PORTMARNOCK TRI | ||||||
| 10K | 00:53:35 | Stage Position | 5758 |
| Halfway | 01:54:19 | Stage Position | 6259 |
| 30K | 02:52:02 | Stage Position | 8102 |
| Gun Time | 04:17:36 | Overall Position | 8719 |
| Chip Time | 04:15:36 | Chip Position | 8577 |