Trail Running calendar near Guildford 2025-2026

The Woldingham Marathon, held near Caterham, UK, offers both full (26.2 miles) and half marathon (13.1 miles) distances on an out-and-back course starting at Woldingham School. The route features a scenic mix of private roads, green valleys, wooded trails, and countryside views across Kent and Surre..

Run Winchcombe is a family-friendly running event held at the historic Sudeley Castle in Winchcombe. It offers three race distances: a 1k for children under 11, a 5k for ages 11 and over, and a 10k for participants 16 and older. The courses feature scenic routes around the castle grounds, including..

Trail Run Canterbury is a scenic trail running event held around the outskirts of Canterbury, starting from St. Edmund's School. The event offers three distance options: 5.5 miles, 10 miles, and 20 miles, with the longest being two loops of the 10-mile course.Runners experience a mix of open country..

The Chelmsford Brew Co Summer August Ale Trail 10K is a fun, charity-focused running event held at Brewery Fields, Great Baddow, Chelmsford. Scheduled for August 28, 2025, the 10K course is a GPX/Strava route with a narrative guide, emphasizing enjoyment over competition. Participants receive a drin..

The London Backyard Ultra is a unique endurance running event held at Frylands Wood Scout Outdoor Centre in Croydon, London. Participants run a four-mile loop every hour on the hour, continuing until only one runner remains, testing their true limits. The event offers a challenging yet supportive at..

The Mendip Marauder is a challenging ultra running event held in Somerset, England, featuring two distances: a 30-mile and a 50-mile race. The 30-miler covers the entire West Mendip Way, while the 50-miler includes the East Mendip Way before joining the 30-mile route. The course is notably hilly, wi..

The Henley River Half Marathon, 10k & Juniors event takes place in Henley-on-Thames, UK, on August 30, 2025. This scenic trail run is suitable for both new and experienced runners, featuring routes around Henley-on-Thames with views starting and finishing at Temple Island Meadows, the Royal Henley R..

The Southampton Running Festival, held on August 31, 2025, takes place at Southampton Common, a scenic green space in the city center known for its woodland, grassland, ponds, wetlands, and lakes. The event offers multiple race distances including a 5K, 10K, half marathon, and a junior race, with co..

The T184 is a challenging 184-mile self-supported adventure race following the River Thames from its source near Cirencester to the Thames Barrier in London. Participants navigate through scenic towns, villages, and iconic London landmarks, completing the course within 76 hours. The route alternates..

The 2nd Galloping Grind 10k Trail Run takes place in Boreham, Essex, at Orchards, Damases Lane. This dusk race features a predominantly anti-clockwise trail course, with a new route introduced for 2025. Participants are advised to wear high-visibility or reflective clothing and carry mobile phones f..

The Shere 42k, 21k & 10k Multi Terrain Event is a trail running series held in the scenic Surrey Hills, an Area of Outstanding Natural Beauty. The event offers three distances: a 10k route with 123m ascent through woodlands, a new 21k half marathon featuring parts of the North Downs and Ranmore with..

The South Coast Challenge will take place in Eastbourne on Saturday 6 September 2025. You can run between 16 and 63 miles.

The St Albans Stampede - 12hr Enduro is an ultra marathon held in the scenic Hertfordshire countryside, featuring parts of Heartwood Forest and Nomansland Common. Participants aim to cover the greatest distance by running multiple four-mile loops within a 12-hour period. The event accommodates solo..

The Andover Trail Marathon, held in North Hampshire at Kings Road, Enham Alamein, offers both a full marathon (26.2 miles) and a half marathon (13.1 miles) through scenic trails. The marathon route follows the Testway up to Coombe Gibbet, Hampshire's highest point, then returns via the Conholt estat..

The Westonbirt Arboretum Summer 2025 running event takes place at the National Arboretum in Westonbirt, Tetbury, UK. Participants can choose from distances including 1 mile, 5km, 10km, and a half marathon, all set on a scenic course that winds through diverse tree collections featuring over 2,500 sp..

The Hackpen Hill 10k Trail Run is an annual off-road event held near Weir Farm, Broad Hinton, Swindon, Wiltshire. Celebrating its tenth year, the race features a challenging one-lap course that traverses farm tracks, fields, mud, and rolling hills alongside the historic Ridgeway trail. Suitable for..

The Beast is a challenging 13-mile race hosted by Poole AC, showcasing the stunning landscapes of Dorset. The course begins at Corfe Castle Common, traversing through Worth Matravers and along the coastal path, offering breathtaking views. Runners will encounter a few hills on their return to Corfe...

The Carnival Chase is a scenic running event held in Warminster Town Park, featuring a 10K, 3K, and a new 1.2K Family - Wheelchair - Buggy Fun Run. The course winds through country lanes, tracks, and trails, starting and finishing near the boating lake, with no stiles and a few kissing gates. The ev..

The Bradenham Blast is a highly regarded trail running event held in the scenic Chiltern Hills at Manor Farm, Bradenham, UK. It offers three distances: 5km, 10km, and a new half marathon, catering to runners of all abilities. The course features challenging hills, tranquil beech woodlands, rugged tr..

The Muntjac 15 is a trail running event held on September 7, 2025, featuring a 15-mile course that connects five beautiful woodlands. This race is ideal for runners who enjoy hilly terrain, wooded areas, and single-track trails, offering a scenic and challenging experience. With a limited number of..