Centurion Chiltern Wonderland 50
Goring, United Kingdom • 19 Sep 2026
Chiltern Wonderland 50
The Chiltern Wonderland 50 is a single loop of approximately 50 mile (about 81 km) through the Chiltern Hills. The route includes 5600 ft of ascent and descent and combines mainly trail with some road sections; terrain is listed as 80% trail and 20% road. The course starts and finishes at Goring Village Hall in Goring on Thames, Oxfordshire, and is fully marked with Centurion ribbons and arrows.
The route follows sections of the Thames Path, the Chiltern Way and the Ridgeway, and passes through or near Whitchurch, Mapledurham, Sonning Common, Bix, Stonor Deer Park, Turville and Christmas Common, with a highest point at about 800 ft. There are five staffed aid stations on course offering a range of nutrition including vegetarian, vegan and gluten free options; full medical support and roving medics are provided. Runners must complete the course within a 13 hour time limit and there are additional on-route cut offs.
Entry details and standards are published for each year. For 2026 entries open on 11 October 2025 and close on 31 August 2026; minimum age is 20. Entrants must meet a qualification standard of a completed marathon within the event cut off since 1 January 2021. Pacers and crew are not permitted. Mandatory kit must be carried at all times and a one hour penalty may be applied for missing items. Visit the organization's website for the most recent information.