Trail Running calendar near West Sussex 2025-2026

The Chiltern Hills 100K is a 100-kilometer ultra marathon held in the Chiltern Hills, Buckinghamshire, UK. The race features an anticlockwise loop starting and finishing in Chesham, passing iconic landmarks such as Ashridge Estate, Coombe Hill, Whiteleaf Hill, Bledlow Ridge, and Great Hampden. With..

The Centurion North Downs Way 50® is a challenging 50-mile point-to-point ultramarathon held annually along the North Downs Way National Trail in England. Starting in Farnham, Surrey, and finishing at Knockholt Pound near Greater London, the course features approximately 5,600 feet of elevation gain..

The Jurassic Coast Ultra Challenge is a premier UK trail running and trekking event held along Dorset’s stunning World Heritage coastline. Participants can choose from multiple distances including 100km, 75km, 50km, 25km, and a 10km option in Bridport. The full 100km route starts at Corfe Castle, pa..

The Reigate Priory Park 10K is a scenic charity fun run held in Priory Park, Reigate, Surrey. The course features a 250-meter start plus four laps on an accurately measured, gently undulating cross-country terrain surrounded by lush greenery. Suitable for runners of all levels, the event fosters a f..

The South Downs 50k is a point-to-point trail race held in the South Downs National Park, running from Falmer to Eastbourne along the scenic South Downs Way. Covering 50 kilometers with over 3,500 feet of elevation gain and descent, the course features mostly runnable grass trails, farm tracks, and..

Farmmageddon is an endurance running event held at Hyde Hall Farm, Buntingford (SG9 0RU), returning for its second year in May 2026. The main challenge is a 100-mile race completed over 32 hours, featuring a 5.3 km loop course that includes trail, grassland, and some tarmac paths. The event offers m..

The London 2 Brighton Ultra Challenge is a premier endurance event held annually, covering distances of 100km, 50km, 25km, and 10km. Starting in Richmond, West London, participants traverse the scenic North Downs and Surrey & Sussex countryside, with the full 100km route continuing over the South Do..

The The Fox Trail will take place in Guildford on Saturday 23 May 2026. You can run between 20 and 62 kilometers.

The Seven Sisters Half Marathon is a scenic 13.5-mile trail race held in the South Downs National Park, starting and finishing at Helen Garden in Eastbourne. The course follows the South Downs Way, passing through Friston Forest, woodland trails, the iconic Seven Sisters cliffs, and Beachy Head, off..

The Castle Trails 30km is a scenic point-to-point trail race in Kent, launching in 2026 as part of the Three Castles 50km Ultra weekend. Starting at Little Fant Farm near Maidstone and finishing in Tonbridge, the course follows the River Medway, passing historic sites like East Farleigh’s stone brid..

The Three Castles 50km Ultra Marathon is a scenic race held in Kent, England, starting in Rochester and finishing at Tonbridge athletics track. The flat course follows the River Medway, passing three medieval castles, charming villages, and lush countryside along the Medway Valley Walk. Runners expe..

The Ridgeway Challenge is an 86-mile (139 km) point-to-point trail running race along the entire length of The Ridgeway National Trail in England. Starting at Ivinghoe Beacon in Hertfordshire and finishing at the Avebury Stones in Wiltshire, the course follows a historic path over 5,000 years old. T..

The Beat the Sunset 50km is a multi-terrain ultramarathon held in the Thames Valley, starting and finishing at Summerleaze Park in Maidenhead, Berkshire. The flat, single-lap course covers 50 kilometers with 235 meters of elevation, featuring 75% off-road trails along the Thames Path, Jubilee River,..

The Circuit du Sore Legs is a unique running event held at Wodson Park Sports and Leisure Centre in Ware, Hertfordshire. Participants run on a traffic-free 400-meter athletics track, with distances ranging from 5k to a 6-hour challenge, including half marathon, full marathon, and 50k ultra options...

BigSea Trails (WATER) is a trail running event held on the Isle of Purbeck, Dorset, starting and finishing on the sandy Knoll Beach at Studland. Part of the Classic Element Trail Series, this race celebrates the element of water with routes that showcase stunning coastal and countryside scenery, inc..

The Two Tunnels Races, held in Bath, UK, offer a unique running experience featuring the longest underground sections in the UK. The course passes through the historic Devonshire Tunnel (408m) and Combe Down Tunnel (1672m), both well-lit and surfaced, providing a flat and scenic route beneath the ci..

The Centurion South Downs Way 100® is a challenging 100-mile non-stop foot race along the entire South Downs Way National Trail in Southern England. Starting near Winchester and finishing in Eastbourne, the course features rolling hills, ancient forts, picturesque villages, and expansive views of th..

The Centurion South Downs Way 50km is a challenging non-stop trail race held entirely within the South Downs National Park in Southern England. Starting at Matterley Bowl near Winchester, the 50km course follows the scenic South Downs Way National Trail, featuring rolling hills, ancient forts, pictu..

The Cotswold Way Ultra Challenge is a premier endurance event held in the scenic Cotswolds, starting and finishing at Cirencester basecamp. Participants can choose from multiple distances including 100km, 75km, 50km, 25km, and a 10km option, suitable for walkers, joggers, and runners of all experien..

The YHA 14 Mile Trail Run is an annual trail running event held in the Southease area, accessible via the Lewes-Seaford train line. The challenging 14-mile course begins with a climb and features slippery, muddy, and chalky terrain, making trail shoes recommended. Participants receive bottled water..