Callum Clarke has 5 recorded races from GB.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2024-04-07 | Schneider Electric Marathon de Paris 2024 — Marathon de Paris 2024 | Marathon | 2:50:38 | 807 |
| TCS London Marathon 2026 | Marathon | 3:37:10 | 11923 | |
| TCS London Marathon 2024 | Marathon | 5:58:21 | 48836 | |
| TCS London Marathon 2022 | Marathon | 3:28:15 | 5369 |