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Chiltern 50 Ultra Challenge

Henley-on-Thames, United Kingdom • 26 Sep 2026

Event overview

The Chiltern 50 Ultra Challenge is scheduled for Sat 26 September 2026 with a Henley basecamp. The event uses Henley Showground as the advertised start and finish location. The route is looped around the Chilterns and includes historic trails, rolling hills and nature reserves. Registration for 2026 is listed as open.

Routes, support and logistics

Distances available:

  • 50 km loop - Henley Basecamp
  • 25 km loop - Henley Basecamp
  • 10 km loop - Chiltern 10K

Elevation details from the factsheet: the 50 km route shows ~920 m elevation, the 25 km route ~500 m, and the 10 km loop ~235 m. The event provides covered rest stops roughly every 12.5 km, with main meals about every 25 km and hot drinks, water and energy drinks at all stops. Medical teams, podiatrists and massage services are available, and rest stops include toilet and changing facilities. The route is signed with arrows and night glow-sticks and offers GPS tracking and a timing system that logs progress at rest stops. Henley basecamp includes on-site camping packages, parking, a Saturday night meal and bar, shuttle transfers to nearby train stations, and finishers receive a medal, t-shirt and a finishers meal. Options include an ULTRA MARCH category and a new Trailblazerz category for faster runners. Visit the organization's website for the most recent information.

United Kingdom South East (England) Henley-on-Thames

Race information

Website
50 km
920 m+
50 Km - Henley Basecamp Loop
25 km
500 m+
25 Km Henley Basecamp Loop
10 km
235 m+
Chiltern 10k
Visit the organization's website for the most recent information.
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