Trail Running calendar near Chiltern Hills 2025-2026

Maidenhead Trail Run, part of RunThrough UK, takes place at Summerleaze Park in Maidenhead. The event offers 5K, 10K and Half Marathon on a flat, soft-trail course that loops through tranquil paths beside Maidenhead and Cookham Commons and around Summerleaze Lake. It’s pitched as a relaxed, scenic r..

North Downs 50 Ultra Challenge takes place on the North Downs in Surrey, starting and finishing at Loseley Park, Guildford, with 25 km and 10 km options. The 50 km loop uses the North Downs Way through Surrey hills, offering scenery and views southward with easy access from London. Participants walk..

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,..

ATW Odyssey12 is a multi-terrain running event held at Riverside Park, Regatta Meadow in St Neots, Cambridgeshire (PE19 7AB). It forms part of the ATW First to Full Triathlon Festival, with three events — Odyssey12, Odyssey Triathlon, and St Neots Triathlon (Race 2) — running side by side. Runners c..

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..

SVP100 is a flagship endurance event along the Stour Valley Path in England, covering 102 km (63.4 miles) from Newmarket, Suffolk to Brantham Leisure Centre near Manningtree, Essex. The route follows much of the Stour Valley Trail through Constable Country, offering classic English countryside scene..

Centurion Running's North Downs Way 100 (NDW100) is a 103‑mile continuous trail race from Farnham, Surrey Hills, to Ashford, Kent, with Race HQ at Farnham Leisure Centre. The route follows the North Downs Way with two deviations, reaching the 50‑mile aid point and finishing at the Julie Rose Stadium..

Ramsbury Gold 10km is a multi-terrain running event held near Ramsbury in Wiltshire. The race starts and finishes at Ramsbury Brewery, Stockclose Farm, Aldbourne, within the Ramsbury Estate countryside. Participants can choose the standard 10km or a Canicross 10km option, both on a scenic Wiltshire..

Two Tunnels Races in Bath, UK, organized by Relish The Great Outdoors, offer a unique set of events across a city-centre route that includes Bath’s Devonshire Tunnel (408m) and Combe Down Tunnel (1672m). Distances range from 500m Colourburst and 2km Colourburst to 5km (two waves), 10km (multiple wav..

The Black Bull 15 Mile Trail Run and 15 km Trail Run in Chelmsford, Essex, is staged by Multisport-Management. The event features a 15-mile loop through local countryside and country roads, with a non-competitive 15 km option for those who prefer a jog or walk. Runners start and finish in the pub ga..

The Summer GMU 2026 is an ultra running event featuring a challenging 45-mile loop around the City of Bristol. Held at Aston Park School, the race offers participants a unique opportunity to experience the scenic urban and natural landscapes of Bristol. The event includes options for a full 45-mile..

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..

Silent Pool 10km is a guided trail run hosted by Running Adventures, starting and finishing at Silent Pool Car Park in Albury, near Guildford. The 10km route winds along North Downs Way sections and through Netley Heath forest, finishing in the village of Shere where film locations from The Holiday..

Bewl Water Autumn is Hermes Running’s scenic bi-annual trail race around Bewl Water in Kent, starting near the Bewl Water Visitor Centre in Lamberhurst. Races are offered at four distances: 10km, half marathon (13.1 miles), marathon (26.5 miles), and Ultra 50km (31.25 miles). The route follows the B..

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..

Starting and finishing at St Martha's, Guildford, the North Downs Way Ultra Run is a 30-mile trail journey through the Surrey Hills. The route highlights the best sections of the North Downs Way, including Box Hill and Denbies Wine Estate, with sweeping downs views before looping back to Guildford v..

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..