Centurion Chiltern Wonderland 50
Goring, United Kingdom • 19 Sep 2026
Chiltern Wonderland 50
The Chiltern Wonderland 50 is a single 50 mile loop through the Chiltern Hills, starting and finishing at Goring on Thames. The route covers 5600 ft of ascent and descent, and is approximately 81 km in length. Terrain is around 80% trail and 20% road and the course is fully marked.
The route follows sections of the Thames Path, the Chiltern Way and the Ridgeway and passes through villages and landmarks including Whitchurch, Mapledurham, Sonning Common, Bix, Stonor Deer Park, Turville and Christmas Common, which is the highest point at about 800 ft. The race includes five staffed aid stations positioned on course; these are described as well stocked and provide options for vegetarian, vegan and gluten free needs. Hot food and drink will be available at the finish.
The event is held under a UK Athletics permit and includes full medical support with a static finish team and at least one roving medical team on course. Runners must finish within a 13 hour cut off. Entry details state an entry fee of £115 (£117 for unattached runners), a field size of 250 starters, and a qualification requirement of a completed marathon within the event cut off between 1 January 2021 and race day.
Only finish line bags are permitted for drop items. Pacers and crew are not permitted. Mandatory kit must be carried throughout the race and includes a fully charged mobile phone, at least 1 litre water capacity, a survival blanket (minimum 1.4 m x 2 m), a waterproof jacket with sealed seams and minimum 10000 mm rating, a whistle, a primary headtorch and a backup headtorch (each minimum 100 lumens), a long sleeved base layer or fleece kept dry, and a cup or mug. Time penalties apply for missing kit. Finishers receive a medal and prizes are awarded to top finishers and veteran category winners. Visit the organization's website for the most recent information.