Bill O'Connor has 4 recorded races.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| TCS London Marathon 2025 | Marathon | 6:58:20 | 54790 | |
| TCS London Marathon 2024 | Marathon | 6:41:45 | 52122 | |
| TCS London Marathon 2023 | Marathon | 5:57:59 | 44799 | |
| TCS London Marathon 2022 | Marathon | 5:50:32 | 35574 |