Ian Chapman has 6 recorded races.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| TCS London Marathon 2026 | Marathon | 3:18:54 | 6745 | |
| TCS London Marathon 2026 | Marathon | 3:49:11 | 16019 | |
| TCS London Marathon 2025 | Marathon | 3:33:31 | 9613 | |
| TCS London Marathon 2025 | Marathon | 4:23:11 | 24840 | |
| TCS London Marathon 2024 | Marathon | 3:15:35 | 6432 | |
| TCS London Marathon 2023 | Marathon | 3:25:56 | 7448 |