Trail Running calendar near Horndean 2025-2026

The Dunstable Downs Half Marathon is a rugged, off-road trail running event held at the National Trust's Dunstable Downs estate in the UK. Covering 21.2 km with over 450 meters of elevation, the course features chalk ridge trails offering stunning ridgeline views, challenging hills, exhilarating des..

The RunThrough Marlow Trail Run, taking place on June 28, 2026, is a scenic off-road event set in the Thames Valley, starting at Marlow Rugby Union Football Club. It offers three distances: Half Marathon (1 lap, 53m elevation), 10K (1 lap, 23m elevation), and 5K (2 laps, 20m elevation), all on trail..

The Full Essex Way Ultra is an 82-mile ultra-marathon starting at Epping tube station in London and finishing at the high lighthouse in the historic port of Harwich. The race follows the scenic Essex Way trail, featuring mixed terrain including trails, footpaths, tracks, and roads, with a total elev..

The Spitfire Scramble is a unique 24-hour multi-terrain relay or solo race held at Albyns Farm, London Borough of Havering. Participants can run solo or in teams of two to eight, tackling a 5.75-mile lap repeatedly through day and night. The course spans areas managed by Havering and Forestry Englan..

The Maidenhead Trail Run, taking place on July 26, 2026, offers a scenic and relaxed running experience in Summerleaze Park, Maidenhead, UK. Participants can choose from 5K, 10K, and Half Marathon distances, all featuring flat, soft trail terrain suitable for all levels, from beginners to seasoned t..

The Windsor Trail Run, held on August 30, 2026, takes place in the scenic Alexandra Gardens, Windsor, UK, with views of Windsor Castle. This event offers two race distances: a 10K and a Half Marathon, both featuring flat, trail terrain with minimal elevation (29m for 10K and 58m for Half Marathon),..

The Henley River Half Marathon, 10k & Junior Race takes place at Temple Island Meadows, Remenham Lane, Henley-on-Thames, UK. Scheduled for September 5, 2026, this event features a half marathon, 10k, and a junior race for under-11s. The course offers fast, undulating mixed terrain trails alongside t..

The South Downs 100 mile (Autumn Event) is a challenging single-loop trail race held in the scenic South Downs National Park, starting at Plumpton Racecourse in Lewes, East Sussex. Covering 100 miles with over 12,000 feet of elevation, the course features rolling hills and stunning views, supported..

The Windsor Trail Run, taking place on November 8, 2026, is a scenic trail running event set in Alexandra Gardens, Windsor, Berkshire. Offering both 10K and half marathon distances, the course features flat, off-road trails with gentle elevation gains (29m for 10K and 58m for half marathon), ideal f..