Centurion Hundred Hills 50km
Stonor, United Kingdom • 20 Mar 2027
Hundred Hills 50km - Centurion Running
The Hundred Hills 50km is a 50 kilometre trail ultramarathon held on 20 March 2027 in the Chiltern countryside, based at Stonor Park near Henley-on-Thames. The route consists of two different 25km loops that together cover about 31 miles with approximately 4000 ft (1200 m) of climb. Terrain is predominantly trail with some road sections, and the course is marked throughout.
The event is the season opener for Centurion Running and is organised under a UK Athletics permit through the TRA. Runners are supported by five stocked aid stations, a dedicated medical team with a static finish-line first aid post and roving medics, and on-site food and drink at the finish included in the entry fee. Field size is 600 starters and the overall time limit for the course is nine hours; additional cut offs apply at aid stations. All finishers receive a medal and podium prizes are awarded for the top three men and top three women, with age-category prizes across several masters brackets.
Mandatory kit must be carried at all times and includes a charged mobile phone, a minimum 1 litre water capacity, a survival blanket, a waterproof jacket with sealed seams, a whistle and a long-sleeved spare layer kept dry. Missing required kit on course incurs a one-hour time penalty. Visit the organization's website for the most recent information.