Trail Running calendar near Hertfordshire 2025-2026

The Gosfield Backyard Ultra is a unique endurance running event held at Gosfield School in Essex, UK. Participants run a 4.167-mile (6,706 meters) loop every hour on the hour, continuing until only one runner remains. The course is fully marked and set within the scenic grounds of the school.The eve..

The Woldingham Marathon is a UK Athletics-affiliated running event held at Woldingham School near Caterham, Surrey. It offers both a full marathon (26.2 miles) and a half marathon (13.1 miles) on an out-and-back course featuring a single 13.1-mile loop. The route showcases scenic countryside, includ..

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 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 beautiful views and a fast course ideal for personal bests. The race star..

The 2nd Galloping Grind 10k Trail Run takes place in Boreham, Essex, offering a challenging 10-kilometer course predominantly run anti-clockwise through scenic orchards and trails. This dusk race encourages participants to wear high-visibility or reflective clothing for safety. Limited onsite parkin..

The Ickworth Sunset Chase is a scenic running event held at Ickworth Park, a National Trust estate near Bury St Edmunds, Suffolk. Offering 5K and 10K distances, the race starts at sunset, guiding runners through landscaped parkland, meadows, forests, and rolling countryside. The course features mult..

The Shere 42k, 21k & 10k Multi Terrain Event is a popular trail running competition set in the picturesque Surrey Hills, recognized as an Area of Outstanding Natural Beauty. Participants can choose from three distances: a scenic 10k, a challenging 21k, or a full marathon at 42k. Each route features..

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

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 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 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..

The Sufferings is a challenging trail running event held at Washington Village Hall in Pulborough, UK. The race features three distances: a half marathon, a full marathon, and a 39-mile ultra, all incorporating the toughest tracks of the Chanctonbury and Cissbury rings. Participants face significant..

The Coln Valley Charity Trail Run, held in the scenic Coln River valley between Coln St Aldwyns and Bibury, offers 2km, 5km, and 10km trail distances suitable for all ages. The 2km steeplechase features grassy fields with hay bale hurdles and challenging hills, ideal for children and families. The 5..

The Farnham Pilgrim Marathon is a scenic and challenging marathon event held in Farnham, Surrey, within the picturesque Surrey Hills. The course offers spectacular views and a demanding route that appeals to trail running enthusiasts. It is a bespoke event known for its beautiful multi-terrain, off-..

The SOX 10km is a scenic multi-terrain running event held at the South Oxfordshire Brewery in Ipsden, UK. The course covers 10 kilometers with about 60% off-road terrain, including trails, woodlands, fields, and local roads, offering stunning countryside views. Suitable for all abilities, the event..

Thetford Back Yard Ultra is a competitive running event held at High Lodge in Thetford Forest, Suffolk. Participants run a 4.167-mile loop every hour on the hour, continuing until only one runner remains able to complete the loop within the one-hour time limit. This late summer event features chip t..