Graham Chapman has 4 recorded races.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| TCS London Marathon 2026 | Marathon | 3:25:57 | 8481 | |
| TCS London Marathon 2025 | Marathon | 3:25:24 | 7527 | |
| TCS London Marathon 2024 | Marathon | 3:23:45 | 8233 | |
| TCS London Marathon 2023 | Marathon | 3:14:44 | 5255 |