van Haersma Buma, Sietse
NetherlandsManBorn 19922024 – 2026Runner id 2191397
Events
3
2 race dates
Best pace
6.328
km/h · 2024
Best finish
198th
of 613 · 2026
Distance raced
290
km · splits not double-counted
Both results, on one pace scale
2 of 3 results · km/h
6.328 km/hMay 2024 · 50km
5.888 km/hJun 2026 · 139km
Both results on one pace scale, with no line drawn between them — these are different race formats, so the gap is mostly the race rather than the runner.
1 result is not on this chart. They are counted in every statistic above and listed in full below — backyard ultras carry a lap count instead of a pace, which is the number that means something in that format.
Results
| Date | Event | Distance | Result | Pace km/h | Placing |
|---|---|---|---|---|---|
| 2024-05-20 | 50km | 7:54:04 h | 6.328 | 1328/1701 | |
| 2025-10-18 | Dutch Backyard UltraNetherlands | 36h | 100.590 km | 15laps | 82/188 |
| 2026-06-12 | 139km | 23:36:29 h | 5.888 | 198/613 |