| Event | 2013 Airtricity Dublin - Marathon |
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| Name | Larry O' Brien | Club | Race Number | 4170 | Date | 28/10/2013 | |
| Gender | Male | Gender Position | 3280 of 8666 | Category | M35 | Category Position | 897 of 2039 |
| 10K | 00:51:15 | Stage Position | 3663 |
| Half | 01:49:34 | Stage Position | 3887 |
| 20Mile | 02:48:16 | Stage Position | 3665 |
| Gun Time | 03:48:22 | Overall Position | 3678 |
| Chip Time | 03:47:23 | Chip Position | 3731 |