Adam Stammers 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 | 3:45:39 | 16057 |
| TCS London Marathon 2026 | Marathon | 3:50:16 | 16425 | |
| TCS London Marathon 2025 | Marathon | 3:42:23 | 12072 |