Rob Collier has 4 recorded races.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| TCS London Marathon 2026 | Marathon | 2:54:34 | 2181 | |
| TCS London Marathon 2025 | Marathon | 2:53:47 | 1908 | |
| TCS London Marathon 2024 | Marathon | 3:02:20 | 3973 | |
| TCS London Marathon 2023 | Marathon | 3:06:22 | 3848 |