| Event | 2012 Dublin - Marathon |
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| Name | Deirdre Mangan | Club | REA O'Donnell | Race Number | 15480 | Date | 29/10/2012 |
| Gender | Female | Gender Position | 2118 of 3598 | Category | F45 | Category Position | 230 of 426 |
| to 10K | 01:08:47 | Stage Position | 10810 |
| 10K to Half | 01:13:48 | Stage Position | 10270 |
| Half to 20Mile | 01:11:01 | Stage Position | 8186 |
| Gun Time | 04:38:11 | Overall Position | 9157 |
| Chip Time | 04:35:47 | Chip Position | 8999 |