Ultra Challenge Chiltern 50
Fifty or twenty-five kilometres of Chiltern loops out of Henley, with a 10K for the day.
| Distance | Ascent | Per km |
|---|---|---|
| 50km | — | — |
| 25km | — | — |
| 10K | — | — |
Nobody has reviewed this one yet
No reviews of the Chiltern 50, and nothing on what people wore. Both are things no organiser publishes and every runner wants before they enter — how it actually went, and what was on your feet.
Ran it? Write the first reviewRunning it soon? Connect Strava and we will ask you about it the day you finish, so you do not have to remember to come back.
Pick your distance
Start time not confirmed yet — check with the organiser.
What you’re in for
Fifty or twenty-five kilometres of Chiltern loops out of the Henley basecamp, with a 10K for the day. Late September. An Ultra Challenge event, which means walkers, joggers and runners on the same course, signed with pink arrows and glow sticks after dark, with a covered rest stop every twelve kilometres or so — food, drink, medics, toilets — and a bigger one every twenty-five. Runners can enter with a target time; most of the field will be walking.
Terrain and trail
Chalk bridleway, beech woodland and the Thames path around Henley — firm and rolling, with short steep pulls out of the valleys. Signed throughout. A road shoe with tread.
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How to enter
Sat, 26 Sept 2026 · Entries open
Enter on their website ↗Entries are handled by Ultra Challenge, not by us. We take nothing for sending you there.
Add to your calendar · as an all-day entry, until the start time is confirmed
Common questions
- The Chiltern 50 offers 3 distances: 50km (31.1 miles), 25km (15.5 miles), 10K (6.2 miles).