Trail Running calendar near Hertfordshire 2025-2026

The MTC Thames Challenge is a four-day ultra endurance event from August 6–9, 2026, starting at Kemble Station in the Cotswolds (GL7 6AW). The 184-mile course unfolds across four stages, featuring four unique Ultra events: The Cotswold Ultra, The Oxford Ultra, The Windsor Ultra, and The Richmond Ult..

The MTC Cotswold Ultra is the opening day of The Thames Challenge, based at Kemble Station (GL7 6AW). This UKA-sanctioned running event is a self-sufficient ultramarathon with solo entry (£90). The route follows the Thames Path from Kemble to the river’s source, then returns via Wysis Way and along..

The MTC Oxford Ultra is an ultra-distance running event in Oxford, serving as Day 2 of The Thames Challenge. The venue is the Travelodge Oxford on Abingdon Road (OX1 4XG). A key feature is self-sufficiency: competitors must carry mandatory gear, including a backpack, head torch with spare batteries,..

The MTC Windsor Ultra is an ultra running event held in Windsor, United Kingdom, organized by Ultra Running Ltd and listed under UK Athletics. The event is scheduled for Saturday, 8 August 2026. Entry is currently open with an individual entry fee of £90 plus service fee; a defer option to 2026 is a..

The Black Bull 15 Trail Runs, held in Chelmsford, UK, offer two main distances: a competitive 15-mile trail run and a non-competitive 15km run/jog/walk. The event takes place in the scenic local countryside and country roads, starting and finishing at the Black Bull pub garden. Participants can enjo..

The Windsor Trail Run, organized by RunThrough UK, takes place at Alexandra Gardens in Windsor, UK. It offers 10K and Half Marathon distances along a flat, trail course with light elevation (29m for 10K, 58m for the half). The route showcases Windsor’s royal scenery, including distant Windsor Castle..

Set along the River Thames at Temple Island Meadows, Henley-on-Thames, the Henley River Half Marathon, 10K & Junior Race from RunThrough UK offers a late-summer Riverside challenge. The event features three distances: half marathon (the route includes a mini lap plus two laps), 10K (one lap), and a..

The Silent Pool 10km is a guided trail running event starting and finishing at the scenic and historic Silent Pool near Guildford, Surrey. The route features beautiful trails including parts of the North Downs Way, the forest of Netley Heath, and the picturesque village of Shere, known for film loca..

The Boudicca Way 50km Ultra is a beginner-friendly ultramarathon held in Norfolk, England, following the historic Boudicca Way long-distance path from Diss to Norwich. This scenic 50km route passes through charming villages such as Pulham Market, Fritton, Saxlingham, Stoke Holy Cross, and Caistor St..

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 North Downs Way Ultra Run is a 30-mile guided trail run starting and finishing at St Martha's Hill in Guildford, Surrey. It showcases some of the best sections of the North Downs Way and surrounding Surrey Hills, including the famous Box Hill and Denbies Wine Estate. Designed for first-time ultr..

Take on a picturesque autumn challenge at Windsor Trail Run on Sunday 8 November 2026. Set in royal Berkshire, this RunThrough event offers a Half Marathon and 10K on a flat, off-road trail course beginning and finishing near Alexandra Gardens. Located in royal Berkshire, the route offers royal view..

The Devil's Punchbowl 10km is a guided trail run held in the stunning natural amphitheatre of the Devil's Punchbowl, located in Hindhead, Surrey. This scenic 10km route features challenging hills and beautiful trails, offering runners spectacular views from the top. Designed for both newcomers to tr..

The Serpent Trail Ultra Run is a 30-mile trail running event starting and finishing in Haslemere, Surrey. It showcases some of the best sections of the Serpent Trail and the Sussex Border Path, featuring diverse terrain including hills, ancient woodlands, lush fields, rare heathland, and scenic vall..

The Box Hill Vertical KM is a challenging guided trail run located in Box Hill, Dorking, Surrey. Covering approximately 12.5 miles with around 1000 meters of elevation gain, the route explores hilly woodland, heathland, and open fields, featuring technical climbs that may require scrambling. Designe..