Kielder, United Kingdom · Sunday, June 28, 2026
Fixed Distance 50K
Northumbrian 50K Ultra
Race completed
48 km Distance
675 m Climbing
3.4 Grit · Challenging
What the course asks
Climbing rate 14 m / km
Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.
Time limit 10 hours
12:30 min/km average. Generous. Walkable throughout for most of the field. About average for a 50K. Measured against 1007 races of the same distance. Cut-off calculator →
Typical conditions, June
Daytime high 16°C
Night low 8°C
Rainfall Showers likely
Daylight 17 h 24 m of light
Regional 2001-2020 average for June — NASA POWER, grid elevation 261 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 675 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.
Similar races
Other 50K trail ultras, closest in distance first.