Klaas Monster has 3 recorded races from Seattle, WA.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-09-06 | Cascade Express Marathon and Half Half Marathon | Half Marathon | 2:20:16 | 243 |
| 2025-06-21 | Seattle Marathon | Summer Events Half Marathon | Half Marathon | 2:59:18 | 1282 |
| 2024-06-22 | Seattle Marathon | Summer Events Half Marathon | Half Marathon | 2:39:59 | 1008 |