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Centurion Running Hundred Hills 50km

Henley-on-Thames, OxfordshireSat, 20 Mar 2027

Fifty kilometres through the heart of the Chilterns.

50K

31 miles

1,176 m ascent

24 m per km

9h cut-off

10:48/km to make it

woodlandMarked course

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No reviews of the Hundred Hills 50km, 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.

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The course

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VERY HARD

TRP grade · E4·T2

9h cut-off, which needs 10:48/km

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What you’re in for

Two different 25 km loops out of Stonor Park, an estate of some eight hundred and fifty years near Henley, through the middle of the Chiltern countryside: old woodland and villages, and a good deal more climbing than the Chilterns suggest. Four fifths trail, marked throughout with Centurion ribbons and arrows. Five aid stations, nine hours, and two start waves a quarter of an hour apart.

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How to enter

Sat, 20 Mar 2027 · Entries open

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Entries are handled by Centurion Running, not by us. We take nothing for sending you there.

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Common questions

The Hundred Hills 50km is one distance: 50K (31.1 miles).