Ultra Running Hub Builth Wells, United Kingdom · Saturday, August 1, 2026
The Eddum
What the course asks
DUV results for the 2025 edition (50mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, August
Regional 2001-2020 average for August — NASA POWER, grid elevation 256 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 50mi | 156 | James Allen · 08:05:00 | Rebecca Perrett · 09:36:00 |
| 2024 | 50mi | 112 | Gwion Schiavone · 08:59:00 | Rebecca Hormann · 09:48:00 |
| 2023 | 50mi | 64 | Bob Thomas · 08:52:00 | Natalie Utting · 10:21:00 |
| 2022 | 50mi | 63 | Martin Indge · 08:27:00 | Charlie Neate · 10:52:00 |
| 2021 | 50mi | 48 | Bob Thomas · 09:16:00 | Olga Stignii · 10:15:00 |
| 2019 | 50mi | 47 | Philip Rutter · 08:56:00 | Sanna Duthie · 08:27:00 |
| 2018 | 50mi | 33 | Dick Jones · 08:40:00 | Rebecca Jones · 11:06:00 |
The field grew 39% between 2024 (112) and 2025 (156). 38% of the 2025 field were women.
DUV results for the 2025 edition (50mi) — 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 vertical 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 80 km of trail with 8,550 m of ascent.
- Trail Running Shoes 107 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition 80 km of self-supported fuelling between aid stations.
- Hydration Vests Pole attachment and chest-strap stability on steep ground.
- Trekking Poles 8,550 m of ascent to walk up.
- Headlamps 80 km almost certainly means running into the night.
Overview
The Eddum is a 50-mile trail race in Builth Wells, United Kingdom, organised by Pegasus Ultra Running. With 8550 metres of elevation gain over 80 kilometres, this race averages 106.9 metres of climb per kilometre. The race has been held 7 times since 2018, with the latest edition in 2025 seeing 156 finishers.
The Eddum’s field size is larger than 84% of its 652 peer 50-mile races, so runners will find themselves among a comparatively large group on the trails.
Similar races
Other 50 mi trail ultras, closest in distance first.