Olwen Cockell has 4 recorded races.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| TCS London Marathon 2026 | Marathon | 3:45:39 | 14720 | |
| TCS London Marathon 2024 | Marathon | 3:40:02 | 13246 | |
| TCS London Marathon 2023 | Marathon | 3:40:41 | 11589 | |
| TCS London Marathon 2022 | Marathon | 3:37:46 | 7165 |