Trail Running calendar near Detling 2026-2027

A 50 km trail ultra in the Chilterns starting and finishing at Stonor Park on 20 March 2027. The marked course has 4000 ft of climb, five aid stations, full medical support and a nine hour cut off.

Trail races around Stansted House take runners through South Downs scenery with wooded sections, open fields and views of the historic house; multiple distances are offered and all finishers receive a metal medal and a gift.

Five days of timed running on certified River Thames routes in Walton on Thames, with flexible lap choices from 5 km to ultra distances, daily time limits, aid station, multi-day Lantern medals and finisher t-shirts.

A two-lap, multi terrain 10 km trail race around Mortimer village that starts and finishes on Mortimer Fairground. The route runs through local woodlands and includes a separate canicross start plus chip timing and downloadable photos.

Riverside mixed terrain half marathon, 10K and junior race on 10 April 2027 at Remenham Farm in Henley on Thames. Marked kilometres, lap formats vary by distance, and entries include a themed medal and chip timing.

Ultra X Spring Trail Series 2027 offers five trail races from 12km to 110km around Cowdrey Estate in the South Downs National Park. Routes pass greensand hills, river, woodland and lowland heath.

A Star Wars 50th Anniversary weekend on 5 and 6 June 2027 at Caldecotte, Milton Keynes featuring marathon and half marathon races around Caldecotte Lake, unique finisher medals, on-course water and toilets, and time limits for each race.

On 4 September 2027 at Remenham Farm, Henley-on-Thames, a mixed-terrain half marathon, 10K and junior race follow a riverbank trail with kilometre markers, chip timing and on-course marshals for guidance.