Janwillem Fidder has 4 recorded races.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| BMW Berlin Marathon 2025 | Marathon | 4:44:04 | 22268 | |
| TCS London Marathon 2025 | Marathon | 4:29:36 | 26937 | |
| BMW Berlin Marathon 2024 | Marathon | 4:12:12 | 23002 | |
| BMW Berlin Marathon 2022 | Marathon | 3:21:58 | 4960 |