Siobhan Weir has 3 recorded races from GB.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-04-12 | Schneider Electric Marathon de Paris 2026 — Marathon de Paris | Marathon | 3:41:25 | 14400 |
| TCS London Marathon 2026 | Marathon | 3:45:00 | 14488 | |
| TCS London Marathon 2023 | Marathon | 3:53:28 | 15627 |