Trail Running Calendar South East (England) 2025-2026

The Sussex Downs Trail Run takes place in the scenic South Downs National Park, starting from Plumpton Racecourse. Participants can choose between three distances: a 22km Half Marathon, a 12km Standard route, and a 9km option, catering to various skill levels. The course features a mix of flat secti..

The Hurtwood 50K, organized by Freedom Racing, is a popular ultra-running event set in the scenic Surrey Hills. This trail race features a fully marked long-distance route, enhanced with additional signage for participant guidance. The event includes regular checkpoints offering food and drinks, mak..

The New Forest Xmas Trails is a festive trail running event hosted by BigFeat Events, set in the picturesque New Forest National Park. Participants can choose from four distances: 15K, 30K, Marathon, and 50K, all on challenging yet runnable off-road courses. The event begins at Holmesly Campsite, of..

The Winter Downs 200 is a challenging 200-mile continuous trail run scheduled for December 10-14, 2025. This event features a scenic loop around the South of England, incorporating renowned trails such as the North Downs Way, Vanguard Way, South Downs Way, Wayfarers Walk, and St Swithuns Way. Partic..

The Mince Pi Run - Races of 2 Decimal Places is a unique running event scheduled for December 14, 2025, at Shalford Park, Guildford. Participants can choose to run distances ranging from 3.14 to 31.4 miles, with options for a Pi marathon and a 1-mile fun run for younger children. The course is mostl..

The Winter Wanderlust 50km is an exhilarating ultra-trail race set against the stunning winter landscape of Kent. Participants will embark on a scenic journey from Detling to Wye, traversing the North Downs Way, with a mix of challenging climbs and breathtaking views. The event features well-stocked..

The Festive Friston Forest Night Trail Run is a unique 5-mile running event set in the scenic Friston Forest, taking place on December 22, 2025. Participants will navigate the course using Strava GPX on their devices, with a tail runner to ensure safety. The event encourages festive spirit, featurin..

The Winter Woolly 10km is a popular trail running event held on December 24th at the picturesque Elstree School in Upper Woolhampton, Berkshire. This multi-terrain race offers participants a scenic experience through the beautiful countryside, featuring lanes, footpaths, trails, and woodlands, with..

The Die Hard Christmas Marathon and Half Marathon is a festive running event taking place on December 24, 2025, at Caldecotte Lake in Milton Keynes. Participants can choose between a full marathon, consisting of 7.5 scenic laps, or a half marathon with 3.5 laps. The event features a supportive atmos..

The Knacker Cracker is renowned as "Britain's toughest 10k," featuring a challenging course that includes significant elevation changes, with a total ascent of 473 meters. The race, set in the scenic surroundings of Box Hill and Denbies Vineyard, offers a unique experience for runners, including a k..

Dark Skies Surrey Hills is an exhilarating night trail running event set in the picturesque Surrey Hills, featuring races of 10 miles, 10K, 5K, as well as Canix and children's races for ages 3-11. Participants navigate through enchanting woodlands under the stars, illuminated by headlamps, making fo..

The Country to Capital Ultra Marathon is a renowned 43-mile race that marks the beginning of the ultra running season. Set in the picturesque Buckinghamshire countryside, the course takes participants through diverse terrains, including trails and canal towpaths, culminating near the Little Venice c..

The Ashdown Forest 10 & 5 Mile Series is an eco-friendly running event held at Pippingford Park, featuring two races designed to provide an exhilarating experience in a sustainable environment. The series includes a 10-mile and a 5-mile race, both set against the stunning backdrop of Ashdown Forest...

The Pilgrim Challenge is a renowned ultra marathon event held along the scenic North Downs Way in the UK. Participants can choose to run or walk either 66 miles over two days or 33 miles in a single day. The event is designed for both seasoned runners and newcomers, offering a supportive atmosphere..

XTERRA Matterley is an exciting off-road racing event scheduled for February 14-15, 2026, at the picturesque Matterley Basin in the United Kingdom. This event offers a variety of race formats, including duathlons and trail runs, catering to athletes of all skill levels. Participants can choose from..

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 Humanity Direct Amersham Ultra is a one-day endurance event set in the picturesque Chiltern Hills, offering participants the choice of running or walking distances of 10 km, 25 km, or a full 50 km ultra marathon. This event not only challenges athletes but also supports a noble cause, as all pro..