Harry Palmer has 4 recorded races from GB.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-04-13 | Schneider Electric Marathon de Paris 2025 — Schneider Electric Marathon de Paris | Marathon | 3:48:42 | 17511 |
| TCS London Marathon 2025 | Marathon | 5:12:34 | 39843 | |
| TCS London Marathon 2025 | Marathon | 5:38:38 | 45753 | |
| TCS London Marathon 2024 | Marathon | 4:35:49 | 32077 |