Trail Running Calendar South East (England) 2025-2026

The Pilgrim Challenge is a renowned ultra marathon held along the historic North Downs Way in the UK, offering participants the choice to run or walk either 33 miles in one day or 66 miles over two days. The course features stunning landscapes, picturesque villages, and areas of outstanding natural..

The Hibernal Hills 50 Miles is a season-opening ultra running event held at Queen Elizabeth Country Park in Hampshire. This single-loop race covers 50 miles of predominantly trail terrain with approximately 6,400 feet of elevation gain, featuring runnable but undulating paths with some significant h..

XTERRA Matterley is an off-road sporting event held at the scenic Matterley Basin in Hampshire, United Kingdom. Scheduled for February 14-15, 2026, it offers a variety of race formats including duathlons and trail runs suitable for athletes of all levels. The duathlon races feature distances such as..

BigMud Trails (EARTH) is the first event in the Classic Element Trail Series, celebrating the element of Earth. Set in the scenic Meon Valley at Queen Elizabeth Country Park, participants can choose between a 16-mile or marathon distance, both featuring challenging single-lap courses with significan..

The Fitstuff G3 Series No.3 is a running event held at Newlands Corner, Drove Road, Guildford, Surrey. Participants can choose between 10km and 15km race distances. The event offers a scenic course starting and finishing at Newlands Corner, with parking available on-site.Runners can also opt for bun..

Endurancelife Sussex offers a scenic trail running event featuring 10K, half marathon, marathon, and ultra distances along the iconic coastal landscapes of Eastbourne and Seaford, adjacent to the South Downs National Park. The courses showcase the famous Seven Sisters chalk cliffs and expansive view..

The Leith Hill Half Marathon is a challenging cross-country race that takes participants from Dorking to the summit of Leith Hill, the highest point in south-eastern England, and back. Spanning 13.1 miles with an elevation gain of 1,800 feet, this event is celebrated for its stunning scenery and sup..

The Humanity Direct Amersham Ultra is a one-day endurance event held in the scenic Chiltern Hills near Amersham, Buckinghamshire. Participants can choose from three distances: 10km, 25km (half ultra), or the full 50km ultra marathon. The course starts and finishes at Dr Challoner's Grammar School an..

The Centurion Hundred Hills 50km is a scenic trail ultramarathon held in the Chiltern countryside, starting and finishing at the historic 850-year-old Stonor Park near Henley-On-Thames, England. The race features two distinct 25km loops, covering 50 kilometers with approximately 4,000 feet of elevat..

Winter's End - 50 Mile Ultra & Marathon is a scenic trail running event held along the South Downs Way National Trail, starting near Arundel, West Sussex, and finishing in Winchester, Hampshire. The event features a 50-mile ultramarathon and two marathon options covering either the first or second h..

The Windsor Trail Run March 2026, hosted by RunThrough UK, takes place on March 22, 2026, at Alexandra Gardens in Windsor, UK. This event offers two race distances: a 10K and a Half Marathon, both featuring flat, trail terrain with scenic views of Windsor Castle. The 10K has an elevation of 29 meter..

The Springtide 50k is an ultra running event held in the historic town of Arundel, West Sussex. This single-loop course offers a runnable, non-technical route through the scenic South Downs, making it ideal for beginners and experienced runners alike. Participants enjoy stunning views of rolling hil..

The Testway Ultra is a challenging ultra marathon held in Hampshire, England, featuring 40 and 50-mile distances along the scenic Testway footpath. The route stretches from the chalky downs near the Northern Hampshire/Berkshire border to the southern town of Totton in Southampton, showcasing picture..

The Mortimer 10km is a scenic trail running event held in the charming Berkshire village of Mortimer, starting and finishing at Mortimer Fairground. The race features a beautiful two-lap, multi-terrain course that covers woodland trails, footpaths, and bridleways with an elevation gain of 85 meters...

The Centurion South Downs Way 50® is a challenging 50-mile foot race held annually along the South Downs Way National Trail in Southern England. Starting in Worthing and finishing with a lap at Eastbourne Sports Club Athletics Track, the course features 5,700 feet of elevation gain over 85% trail an..

The Henley River Half Marathon, 10k & Junior Race takes place in Henley-on-Thames, UK, starting and finishing at the scenic Temple Island Meadows, the iconic site of the Royal Henley Rowing Regatta. Scheduled for April 11, 2026, this event offers a mixed-terrain, undulating course along the Thames,..

The 50 Mile Grand Slam 2026, organized by Centurion Running, is a series of four challenging 50-mile ultramarathons held across iconic UK trails. The event includes the South Downs Way 50, North Downs Way 50, Chiltern Wonderland 50, and Wendover Woods 50, taking place between April and November 2026..

The Spring Trail Series by Ultra X is a trail running event held at the Cowdray Estate in Surrey, within the scenic South Downs National Park. The series features five race distances: 12km, 25km, 50km, 50 miles, and 110km, all starting and finishing at the same location near Cowdray Farm Shop. The c..

The Chiltern Ridge Classic 50K is an iconic ultra marathon held in the Chiltern Hills, UK, featuring a challenging 51 km trail run with 996m of elevation gain. Starting at historic Berkhamsted Castle and finishing at Hampden Meadow in Wendover, the course traverses stunning ridgeline trails includin..

The Windsor 50 Ultra Challenge, formerly known as the Easter 50, is a premier UK trail running and trekking event held at Windsor Racecourse. Scheduled for April 18, 2026, it offers three looped distance options: a 50 km ultra, a historic 25 km, and a 10 km challenge. Participants traverse scenic ro..