The Druid's Challenge

Centurion Running’s Chiltern Wonderland 50 is a 50-mile single-loop ultramarathon set in the Chiltern Hills, starting and finishing in Goring-on-Thames, Oxfordshire. The route climbs around 5,600 feet and traverses picturesque villages rich in history, including locations made famous by British film..

The Humanity Direct Tring Ultra is a one-day trail event on 20 September 2025, starting and finishing at Tring Cricket Club (HP23 5NG) in the Chilterns, Hertfordshire. Distances offered are: 50 km (full ultra, listed also as 31 miles) 27 km (half ultra) 10 km Ascent gain varies by distance, repor..

Creative Juices 10km is a 10km trail race hosted by Creative Juices Brewing Company at Woodoaks Farm near Rickmansworth, WD3 9XQ. The mostly off-road course (about 95% off-road) winds through woodlands, footpaths and bridleways, starting adjacent to the brewery taproom and finishing back at the brew..

The Endless Garden – A Backyard Ultra Marathon takes place at The Waggoners in Ayot Green, Welwyn Garden City, United Kingdom, from 27 to 29 September 2025. The race uses a 4.167-mile trail loop run hourly on the hour, with the field whittling down to a sole finisher. The route is designed to be saf..

Chiltern 50 Ultra Challenge is part of Ultra Challenge’s UK trek and trail series, based at Henley Showground. It offers a 50 km loop (920 m ascent) and a 25 km option, plus a 10 km Chilterns route. The end-of-season course winds through the Chilterns’ historic trails, rolling hills, nature reserves..

Thunder Races offers trail running events in Bedfordshire, UK, centered on Harrold-Odell Country Park. The events feature multiple distances, including a 25km and a 50km trail race, designed for both experienced ultrarunners and newcomers. Runners traverse runnable woodland and countryside around Ha..