Harich, Netherlands · Saturday, October 24, 2026

Fixed Distance 50K

Gaasterland Trail

6 days to go
50 km Distance
100 m Climbing
2.7 Grit · Entry level
52.9024° N, 5.5637° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 2 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 ~67 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2025 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, October

Daytime high 14°C
Night low 9°C
Rainfall Mostly dry
Daylight 10 h 07 m of light

Regional 2001-2020 average for October — NASA POWER, grid elevation 0 m. Not a forecast.

Results history

Year Race Finishers Men's winner Women's winner
2025 50km 67 Thijmen van der Loop · 03:54:00 Jody Ploemen-de Graaf · 04:47:19
2024 50km 42 Kristof Declerck · 03:59:35 Alie Postma-Gercama · 04:15:21
2023 50km 29 Rudy Kaptein · 04:24:44 Conny Terwal · 05:19:41
2022 50km 32 Jort van Zutphen · 04:08:18 Sandra Medendorp · 05:38:31

The field grew 60% between 2024 (42) and 2025 (67). 12% of the 2025 field were women.

DUV results for the 2025 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 100 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

The Gaasterland Trail is a 50k trail race in Harich, Netherlands, scheduled for October 24, 2026. The course has 100 meters of elevation gain over 50 kilometers, which means 2 meters of climb per kilometer. This makes it a flatter course than 95% of 50k races.

The race has a 7-hour time limit, allowing for a cutoff pace of 8.4 minutes per kilometer. This cutoff is tighter than 95% of 50k cut-offs, leaving little margin for error. With a 20 Euro entry fee, the race has seen up to 67 finishers in previous editions.

Having been held 4 times since 2022, the race has a field size bigger than 67% of 50k fields and smaller than 32% of 50k fields among its 2757 peers.

Similar races

Other 50K trail ultras, closest in distance first.