Robert Rostas has 4 recorded races from GB.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2024-04-07 | Schneider Electric Marathon de Paris 2024 — Marathon de Paris 2024 | Marathon | 2:59:02 | 1910 |
| TCS London Marathon 2026 | Marathon | 2:57:08 | 2649 | |
| BMW Berlin Marathon 2025 | Marathon | 2:58:27 | 2005 |