Ultra Running Hub Bergschenhoek, Netherlands · Saturday, September 5, 2026
Fixed Distance 50K
FunRotteRunner-loop
Race completed
48 km Distance
200 m Climbing
2.7 Grit · Entry level
What the course asks
Climbing rate 4 m / km
Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.
Time limit 7 hours
8:45 min/km average. Comfortable. Room to walk the climbs and stop at aid. Among the tightest 50K cut-offs we track. Measured against 1087 races of the same distance. Cut-off calculator →
Typical conditions, September
Daytime high 19°C
Night low 13°C
Rainfall Mostly dry
Daylight 13 h 25 m of light
Regional 2001-2020 average for September — NASA POWER, grid elevation 0 m. Not a forecast.
The Aid Station
Course-specific beta from the community
This is a fast & flat course. Expect fast, runnable sections where rhythm is key.
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 48 km of trail with 200 m of ascent.
- Trail Running Shoes48 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition48 km of self-supported fuelling between aid stations.
- Hydration VestsFlask capacity for 48 km, without the bounce.
- GPS WatchesBattery life first — a 48 km day outlasts most full-GPS modes.
Course Notes
From a central point 3 different loops along the river De Rotte. Partly trail.
Similar races
Other 50K trail ultras, closest in distance first.