Ultra Running Hub Shotley, United Kingdom · Sunday, May 16, 2027
Fixed Distance 50K
Five Rivers Ultra 50km
242 days away
50 km Distance
300 m Climbing
3.0 Grit · Challenging
What the course asks
Climbing rate 6 m / km
Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.
Time limit 9 hours
10:48 min/km average. Generous. Walkable throughout for most of the field. Tighter than 71% of 50K races. Measured against 1007 races of the same distance. Cut-off calculator →
Field size ~42 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, May
Daytime high 16°C
Night low 8°C
Rainfall Mostly dry
Daylight 15 h 41 m of light
Regional 2001-2020 average for May — NASA POWER, grid elevation 26 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 50 km of trail with 300 m of ascent.
- Trail Running Shoes50 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition50 km of self-supported fuelling between aid stations.
- Hydration VestsFlask capacity for 50 km, without the bounce.
- GPS WatchesBattery life first — a 50 km day outlasts most full-GPS modes.
Course Notes
fast, flat trails on the Suffolk & Essex coastlines
Similar races
Other 50K trail ultras, closest in distance first.