Ultra Running Hub Berkhamsted, United Kingdom · Saturday, October 31, 2026
Fixed Distance 50K
Chiltern Ridge Winter 50k
12 days to go
50 km Distance
800 m Climbing
3.7 Grit · Challenging
What the course asks
Climbing rate 16 m / km
Rolling. Moderate undulations. Requires consistent effort across varying grades.
Time limit 9 hours
10:48 min/km average. Firm. Room to walk the climbs and stop at aid. About average for a 50K. Measured against 1063 races of the same distance. Cut-off calculator →
Field size ~297 Large. Rarely out of sight of another runner.
DUV results for the 2025 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, October
Daylight 9 h 46 m of light
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 50km | 297 | Matthew Wade · 03:50:38 | Siobhan Brown · 04:51:34 |
| 2024 | 50km | 212 | Cillian Fleming · 03:38:00 | Lynne Nicholls · 04:37:15 |
The field grew 40% between 2024 (212) and 2025 (297). 26% of the 2025 field were women.
DUV results for the 2025 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Course notes
- terrain This is a rolling course. Expect fast, runnable sections where rhythm is key.
- gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 50 km of trail with 800 m of ascent.
- Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition 50 km of self-supported fuelling between aid stations.
- Hydration Vests Flask capacity for 50 km, without the bounce.
- GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.
Similar races
Other 50K trail ultras, closest in distance first.