Simon Readman has 5 recorded races from GB.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-04-12 | Schneider Electric Marathon de Paris 2026 — Marathon de Paris | Marathon | 4:43:11 | 43752 |
| TCS London Marathon 2026 | Marathon | 3:53:40 | 17617 | |
| TCS London Marathon 2025 | Marathon | 3:35:35 | 10144 | |
| TCS London Marathon 2024 | Marathon | 3:28:57 | 9848 |