Trail Running Calendar South East (England) 2025-2026

The Beat the Sunset 50km is a multi-terrain ultra marathon held in the Thames Valley, starting at Summerleaze Park in Maidenhead. The flat, single-lap course covers 50 kilometers with 235 meters of elevation, featuring 75% off-road terrain along the Thames Path, Jubilee River, and the Green Way. The..

The Three Castles Race is a 50km ultra marathon along the scenic River Medway in Kent, England. Participants run through picturesque villages, lush countryside, and pass three medieval castles, starting in Rochester and finishing at Tonbridge athletics track. The course features flat, marked trails..

Harewood 24 is an exhilarating 24-hour endurance event designed for both solo runners and teams, set in a stunning off-road forest environment. Participants can tackle 5-mile loops, either individually or in pairs of up to eight members. The event offers a unique challenge, allowing solo runners to..

The Coombe Hill Fell Race is an exciting 7km fell run, categorized in the BS Category by the Fell Running Association. Set in Wendover, Bucks, the race features a challenging course with steep climbs and descents. Participants can enjoy a fun atmosphere, with entry fees of £5 for general participant..

The Oliver Fisher 10K & 5K is an exciting running event taking place at Milton Creek Country Park in Sittingbourne, Kent, on June 1, 2025. This race celebrates the 40th anniversary of the Oliver Fisher Special Care Baby Trust, aiming to raise essential funds for the Neonatal Unit at Medway Maritime..

The Surrey Hills Half Marathon is a scenic 13-mile guided trail run starting and finishing at St Martha's Hill in Guildford, Surrey. Ideal for those new to trail running, the course features beautiful landscapes including St Martha's Church, the village of Shere, Newlands Corner, Hackhurst Downs, an..

The Midweek Chasing Numbers June event, organized by Saturn Running, invites participants to join a flexible running challenge along the scenic River Thames. This inclusive event welcomes runners of all abilities, including walkers, and allows participants to choose their distance within a 7-hour ti..

The South Downs Trail Half Marathon and 10K, taking place at Queen Elizabeth Country Park near Petersfield, are renowned trail running events in the South of England. Participants can enjoy scenic routes that connect with the South Downs Way, featuring beautiful downland and forested landscapes. The..

The South Downs Trail Half Marathon and 10K, hosted at Queen Elizabeth Country Park near Petersfield, are celebrated trail running events in the South of England. Participants will enjoy scenic routes that connect with the South Downs Way, traversing beautiful downland and forested areas. The half m..

The Magna Carta Summer race, organized by Hermes Running, takes place in scenic Runnymede, Surrey, near the historic site where the Magna Carta was signed in 1215. The event offers 10K, half marathon, and marathon distances, all starting by the River Thames at the Wraysbury Skiff & Punting Club. The..

The Blended Trails - Backyard Ultra will take place in New Alresford on Saturday 7 June 2025.

The Dell 10km is a scenic multi-terrain running event held at Dummer Down Farm in Hampshire, England. The course covers 10 kilometers, primarily off-road (90%), featuring trails, woodlands, fields, and some local roads with an elevation gain of 163 meters. Participants enjoy stunning countryside vie..

The South Downs Way 100® is an ultramarathon covering 100 miles along the scenic South Downs National Trail in England. The race starts near Winchester and traverses rolling hills, ancient forts, picturesque villages, and offers expansive views across Southern England, ending in Eastbourne. Particip..

The Hampshire Hoppit is a scenic trail running event held in the picturesque countryside of Hampshire, centered around the village of Kingsclere. It offers three race distances: a marathon, half marathon, and 10k, all featuring clearly marked, single-lap off-road courses with friendly marshals. The..

The Longbridge 100 Backyard Ultra is an inaugural running event designed for both seasoned and novice runners. This last-man/woman-standing race requires participants to complete a 4.167-mile loop every hour until only one runner remains. The event promises excitement and camaraderie, with support f..

The Robertsbridge Midsummer 10k & 5k is a popular community race held annually in East Sussex, returning in 2025. The event features multi-terrain, undulating courses suitable for all abilities, including a junior run. Participants can enjoy a friendly atmosphere with local support, volunteers, and..

P24 - The Longest Attended Day is a unique endurance running event held at Denbies Wine Estate in Dorking, Surrey. Participants run one mile every hour on the hour for 24 consecutive hours, covering a total of 24 miles. The course is an off-road trail through the scenic wine estate, designed to be a..

The Oxford Greenbelt 10km is a scenic running event held in Oxfordshire, hosted at Brookes Sport, Oxford (OX2 9AT), home to the Harcourt Hill Parkrun. The 10k course is predominantly off-road and undulating, featuring a section of the Oxford Greenbelt Way, offering picturesque views of the countrysi..

The Three Shires Way Ultra & Marathon is a running event taking place on June 21, 2025, through the scenic rural landscapes of Bucks, Beds, and Northants. Participants can choose between a 50-mile ultra or a marathon, both suitable for various experience levels. The routes are well-marked along brid..

The Phoenix Denbies Marathon & Half Marathon is scheduled for June 21, 2025, at the Denbies Wine Estate in Surrey. Participants can enjoy a flexible event with up to 30 hours to complete their race, starting anytime between 8:00 am Saturday and late morning Sunday. The race features a flat, off-road..