Ian Walker has 3 recorded races from GB.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2024-04-07 | Schneider Electric Marathon de Paris 2024 — Marathon de Paris 2024 | Marathon | 5:14:35 | 49234 |
| TCS London Marathon 2025 | Marathon | 5:15:37 | 40595 | |
| TCS London Marathon 2025 | Marathon | 5:25:53 | 43039 |