Centurion Hundred Hills 50km
Stonor, United Kingdom • 14 Mar 2026
Hundred Hills 50km : event overview
The Hundred Hills 50km takes place on 14 March 2026 at Stonor Park in the Chilterns. The race is a 50 km trail ultra that uses two different 25 km loops and starts and finishes at Stonor Park. The route includes about 4000 ft (around 1200 m) of climb and passes through villages and ancient woodland. Terrain is listed as about 80% trail and 20% road.
Course, support and rules
The course is fully marked and supported by five aid stations. There is full medical support with a static team at the finish and roving medics on course. The event has a 9 hour overall cut-off and additional cut-offs at aid stations. Pacers and crews are not permitted. Hot food and drink are provided at the finish and are included in the entry fee.
Entry, kit and awards
Entry fee is £78 for affiliated runners (£80 for unaffiliated). Minimum age is 20 or older and there is no waiting list. Mandatory kit must be carried at all times and includes a charged mobile phone (with race medic numbers), at least 1 litre carrying capacity for water, a survival blanket, a waterproof jacket, a whistle and a long-sleeved base layer kept dry. A one hour time penalty applies if mandatory kit is missing. Medals are awarded to finishers and age-category and top-three prizes are given. Visit the organization's website for the most recent information.