Centurion Hundred Hills 50km
Stonor, United Kingdom • 14 Mar 2026
Hundred Hills 50km - Centurion Running
The Hundred Hills 50km is a 50 km trail ultra held on 14 March 2026 at Stonor Park in the Chilterns. The route is made up of two different 25 km loops and includes about 4,000 ft (1,200 m) of climb. The course surface is mostly trail with some road sections.
Runners must complete the course within a 9 hour overall cut off; there are additional cut offs at aid stations. The event uses marked routes and is supported by five aid stations, a dedicated race medical team including roving medics and a static finish medical post, and full UK Athletics permit arrangements. Aid stations provide hydration, gels and chews, hot food at the finish, and a range of sweet and savoury snacks including vegan and gluten free options.
Parking is provided at the start/finish so finish bags should be left in vehicles where possible; a finish line bag drop is available for runners without vehicles. Pacers and crew are not permitted on course. Mandatory kit must be carried at all times and will be checked; required items include a fully charged mobile phone, a minimum 1 litre water carriage, a survival blanket, a waterproof jacket with sealed seams, a whistle, and a long sleeved dry layer. A one hour time penalty may be imposed for missing mandatory items.
Entry fee is listed at £78 for affiliated runners and £80 for unaffiliated runners. The event is operating with a waiting list for new entries. Visit the organization's website for the most recent information.