Dean Lenihan has 5 recorded races.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| TCS London Marathon 2026 | Marathon | 2:35:13 | 395 | |
| TCS London Marathon 2025 | Marathon | 2:42:12 | 785 | |
| TCS London Marathon 2024 | Marathon | 2:40:55 | 825 | |
| TCS London Marathon 2023 | Marathon | 2:43:21 | 836 | |
| TCS London Marathon 2022 | Marathon | 2:52:58 | 1063 |