Centurion Hundred Hills 50km
Stonor, United Kingdom • 14 Mar 2026
Event overview
The Hundred Hills 50km takes place on 14 March 2026 at Stonor Park, Stonor, Henley-on-Thames (RG9 6HF). The race is a trail ultra covering 50 km (31 mi) arranged as two different 25 km loops. The route includes about 4000 ft (1200 m) of climb and is listed as 80% trail and 20% road. The published overall cut-off for the event is 9 hours.
Course and logistics
The course is marked with Centurion ribbons and marker arrows. There are five aid stations on course. Finishers receive a medal; finishers may opt for a tree to be planted instead or exchange the medal for a patch. A map and downloadable GPX/KML files are provided by the organiser.
Support, kit and rules
The event is supported by a static first aid team at the finish and at least one roving medical team on course. No pacers or crew are permitted. Mandatory kit must be carried at all times; examples include a fully charged mobile phone, water container with at least 1 litre capacity, survival blanket, waterproof jacket with sealed seams, a whistle and a dry long-sleeved top. A one-hour time penalty is applied for any missing mandatory item. Entry fees are shown around £78–£80 depending on affiliation. Additional cut-offs and aid station details are published by the organiser. Visit the organization's website for the most recent information.