Pontneddfechen, United Kingdom · Saturday, October 31, 2026
Fixed Distance 50K
Black Beacon Ultra Bach 50 km
Race completed
50 km Distance
2,200 m Climbing
5.8 Grit · Challenging
What the course asks
Climbing rate 44 m / km
Mountain. Significant climbing. Steep sections will require power hiking.
Time limit 14 hours
16:48 min/km average. Generous. Walkable throughout for most of the field. More forgiving than 86% of 50K races. Measured against 1087 races of the same distance. Cut-off calculator →
Field size ~38 Small. Long stretches with nobody in sight.
DUV results for the 2024 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
The Aid Station
Course-specific beta from the community
This is a mountain course. Poles are highly recommended for the sustained climbs.
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 50 km of trail with 2,200 m of ascent.
- Trail Running Shoes44 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition50 km of self-supported fuelling between aid stations.
- Hydration VestsPole attachment and chest-strap stability on steep ground.
- Trekking Poles2,200 m of ascent to walk up.
- HeadlampsA 14 h limit puts you out there after dark.
Similar races
Other 50K trail ultras, closest in distance first.