Nikki Watt has 5 recorded races from GB.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-04-13 | Schneider Electric Marathon de Paris 2025 — Schneider Electric Marathon de Paris | Marathon | 3:02:44 | 2397 |
| TCS London Marathon 2026 | Marathon | 3:05:27 | 4112 | |
| TCS London Marathon 2026 | Marathon | 4:32:26 | 31193 | |
| TCS London Marathon 2024 | Marathon | 3:15:03 | 6326 |