IJmuiden, Netherlands · Saturday, January 23, 2027

Fixed Distance 50K

Pierewaai Winter Trail 50km

97 days away
50 km Distance
150 m Climbing
2.7 Grit · Entry level
52.4603° N, 4.6105° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 3 m / km Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.
Time limit 7 hours 8:24 min/km average. Tight. Sustained running. Long aid-station stops will cost you. Among the tightest 50K cut-offs we track. Measured against 1057 races of the same distance. Cut-off calculator →
Field size ~49 Small. Long stretches with nobody in sight.

DUV results for the 2026 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, January

Daytime high 6°C
Night low 4°C
Rainfall Mostly dry
Daylight 8 h 32 m of light

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

Results history

Year Race Finishers Men's winner Women's winner
2026 50km 49 Julian van Dijken · 04:09:33 Mey-Ping Low · 04:20:58
2025 50km 32 Mark Breed · 04:35:21 Desiree Koopman · 06:06:13

The field grew 53% between 2025 (32) and 2026 (49). 12% of the 2026 field were women.

DUV results for the 2026 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Course notes

  • terrain This is a fast & flat course. Expect fast, runnable sections where rhythm is key.
  • gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.

Gear for this race

Chosen for 50 km of trail with 150 m of ascent.

  • Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition 50 km of self-supported fuelling between aid stations.
  • Hydration Vests Flask capacity for 50 km, without the bounce.
  • GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.
All gear guides →

Overview

Taking place in IJmuiden in January, the Pierewaai Winter Trail 50km pairs a flat profile with exceptionally strict time constraints. With just 150 meters of total elevation gain across 50 kilometers—averaging 3 meters of climb per kilometer—the terrain eliminates significant climbing, but the running surface is 95 percent sand split between 25 kilometers of beach and 25 kilometers of dunes.

A 7-hour time limit demands a minimum pace of 8.4 minutes per kilometer. That deadline produces a cut-off tighter than 95% of 50k races and more generous than only 5%, leaving very little margin for runners slowed down by soft coastal sand.

Similar races

Other 50K trail ultras, closest in distance first.