Hoofddorp, Netherlands · Saturday, October 24, 2026

Timed 6 hours

Zes uur van de Haarlemmermeer

24 days to go

not publishedn/a Distance

1 m Climbing

not publishedn/a Grit

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.

52.3025° N, 4.6889° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~34 Small. Long stretches with nobody in sight.

DUV results for the 2025 edition (6h) — 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

Daytime high 14°C

Night low 9°C

Rainfall Mostly dry

Daylight 10 h 10 m of light

Regional 2001-2020 average for October — NASA POWER, grid elevation -1 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	6h	34	Leendert van der Lugt · 80.746 km	Leonie Ton · 72.226 km
2024	6h	32	Leendert van der Lugt · 88.739 km	Arenda Könnecke-Scherpenkate · 60.927 km
2023	6h	23	Bram van Rijswijk · 74.065 km	Barbara Zemering · 59.188 km
2022	6h	29	Martijn Klaasse · 86.414 km	Iris Vromans · 73.381 km
2021	6h	13	Gert Mertens · 70.262 km	Lydia Doornbos · 60.515 km
2019	6h	20	Gert Mertens · 68.308 km	Alina Bouma · 55.639 km
2018	6h	23	Pascal van Norden · 80.346 km	Linda Voets · 65.673 km
2017	6h	30	Pascal van Norden · 86.780 km	Lisenka Beenders · 62.475 km
2016	6h	47	Gert Mertens · 78.897 km	Irma Oosterman · 68.978 km
2015	6h	42	Gert Mertens · 81.043 km	Heidi Janssens · 66.302 km

The field grew 6% between 2024 (32) and 2025 (34). 15% of the 2025 field were women.

DUV results for the 2025 edition (6h) — 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

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for this trail race with 1 m of ascent.

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.
GPS Watches Battery life first — an ultra outlasts most full-GPS modes.

Saucony

Peregrine 14

RunRepeat found the Saucony Peregrine 14 to have a natural running feel and superb value, while also being flexible and comfortable. iRunFar noted that the shoe…

★★★★★ 4.5

Brooks