Ultra Running Hub Zeewolde, Netherlands · Saturday, October 17, 2026
Dutch Backyard Ultra Zeewolde
We hold no course length for this race — a timed or backyard event is measured by the clock, not the kilometre — so there is no Grit score to give you.
What the course asks
DUV results for the 2026 edition (50h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, October
Regional 2001-2020 average for October — NASA POWER, grid elevation 4 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2026 | 50h | 189 | Gerben Oevermans · 335.300 km | Irene Kinnegim · 201.180 km |
| 2025 | 36h | 188 | Onno Overes · 241.416 km | Irene Kinnegim · 221.298 km |
| 2025 | 39h | 128 | Adrian Kostera · 261.534 km | Martijntje Holscher · 134.120 km |
| 2024 | 32h | 121 | Mark Hessels · 214.592 km | Floor van Welie · 107.296 km |
The field has held steady: 188 in 2025, 189 in 2026. 12% of the 2026 field were women.
DUV results for the 2026 edition (50h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.
The Aid Station
Course-specific beta from the community
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for this trail race.
- Trail Running Shoes Cushioning on trail that is still there in the last quarter.
- Race Nutrition Self-supported fuelling between aid stations.
- Hydration Vests Flask capacity without the bounce.
- Headlamps A 36 h limit puts you out there after dark.
- GPS Watches Battery life first — an ultra outlasts most full-GPS modes.
Similar races
Other trail ultras of the same format.