Trail Running calendar near Letchworth Garden City 2025-2026

The Dormouse Challenge is a 6-hour running event held at the award-winning Salcey Forest near Northampton, England. Participants run multiple laps of a 3.5-mile off-road loop through well-maintained forest paths, with terrain consisting mainly of crushed stone and forest floor, offering a natural tr..

The Kingston 10k, organized by RunUk, is an exciting running event that takes place in Kingston, Surrey. The race starts and finishes at the Kingston Hawker Centre, offering participants a scenic route through the streets of Kingston and along the river towpath. In support of the NHS, runners are en..

The ATW Wendover Woods Trail Run & Canicross is an exciting event set in the picturesque Wendover Woods, offering participants a chance to challenge themselves on scenic trails. Scheduled for November 23, 2025, the event features various distances, including a 5K, 10K, and Half Marathon trail run, a..

The Serpent Trail Ultra Run is a 30-mile trail event held in Haslemere, Surrey, designed as an accessible introduction to ultra running. Participants will explore some of the best sections of the Serpent Trail and Sussex Border Path, passing through scenic heathlands, ancient woodlands, and rolling..

The Box Hill Vertical KM is a challenging guided trail run focused on hill climbing, organized by Running Adventures. Taking place in Surrey, the event involves exploring the hills of Box Hill and surrounding areas, covering approximately 12.5 miles with over 1,000 meters of elevation gain. Particip..

The Maverick Original Oxfordshire 2025 is a trail running event held at Stonor Park in Oxfordshire. Taking place on November 29, 2025, it offers three routes: 22 km, 12 km, and 7 km, through the historic estate and the Chilterns Area of Outstanding Natural Beauty. The course features challenging cli..

The Maverick Exposure Lights Dark Oxfordshire 2025 is a nighttime trail running event held at Stonor Park in Oxfordshire. Participants can choose from three challenging routes: 7 km, 12 km, or 17 km, all set within the scenic estate known for its wildlife, including fallow deer and wallabies. The ev..

The Riverside Marathon & Half Marathon, organized by Phoenix Running, takes place in Walton on Thames, Surrey, along the scenic River Thames towpath. This event features UK Athletics certified, accurately measured courses with no elevation gain, making it a flat and fast route ideal for runners seek..

The Zig Zag Running St Andrews Day Challenge is a timed running event held at Brandon Country Park in Suffolk, located within Thetford Forest. Participants can choose between a 6-hour or 4-hour challenge, running multiple laps of a 5.3 km multi-terrain course featuring gravel footpaths and grass are..

The Surrey Hills Half Marathon is a scenic 13-mile guided trail run starting and finishing at St Martha's Hill in Guildford, Surrey. The course showcases the stunning landscapes of the Surrey Hills, including landmarks like St Martha's Church, the village of Shere, Newlands Corner, and Hackhurst Dow..

The Sussex Downs Trail Run is a scenic off-road running event set in the South Downs National Park in Mid-Sussex. Starting from Plumpton Racecourse, participants can choose from three distances: 22km, 12km, or 9km. The course features a mix of flat, trail, and challenging climbs, offering spectacula..

The Hurtwood 50K, organized by Freedom Racing, is a renowned trail ultra event set in the picturesque Surrey Hills. This long-distance race features a fully marked route with additional signage, ensuring participants can navigate easily. The event includes regular checkpoints offering food and drink..

The Bauble Bimble is a festive running event held at Ferry Meadows, a large country park near Peterborough, UK. Participants can choose between a 6-hour or 4-hour timed run, completing as many 5.3 km laps as possible on a multi-terrain course featuring gravel footpaths and grass areas. The event sui..

The ATW Grafham Water - Trail & Canicross is a scenic 10-mile trail running event set around the picturesque Grafham Water in Cambridgeshire. Participants will enjoy a route that begins on the iconic dam and winds through beautiful trails, including a Woodland Nature Reserve and Sanctuary Bay. The e..

The Winter Downs 200 is a challenging 200-mile continuous trail running event held in South East England, starting and finishing at Juniper Hall, Dorking. Scheduled for December 10-14, 2025, runners have up to 96 hours to complete a giant loop encompassing five major trails: North Downs Way, Vanguar..

The Mince Pi Run - Races of 2 Decimal Places is a unique running event scheduled for December 14, 2025, at Shalford Park, Guildford. Participants can choose to run distances ranging from 3.14 to 31.4 miles, with options for a Pi marathon and a 1-mile fun run for younger children. The course is mostl..

'Twas The Run Before Christmas is a festive running event held at Brandon Country Park in Suffolk, located in the heart of Thetford Forest. Participants can choose between a 6-hour or 4-hour timed event, running multiple laps of a 5.3 km multi-terrain course featuring gravel footpaths and grass area..

The Let it Stow Half Trail Marathon is a festive-themed 13.1-mile trail race held in Stowmarket, Suffolk, showcasing scenic views of the town and Mid-Suffolk countryside. The course features a mix of woodland, meadows, and quiet country lanes, with well-marked routes including arrows and hi-vis tape..

The Christmas Canter, organized by Zig Zag Running, takes place at the Suffolk Running Centre in Bury St Edmunds. This festive road running event offers multiple distance options including 5k, 10k, half marathon, full marathon, and ultra marathon, all on scenic routes passing through villages like H..

The Elves 11ish Trail is a unique narrative trail race taking place on December 21, 2025, starting and finishing at the Blackwater Leisure Centre. Participants will navigate a circular route of 11 miles, primarily off-road, using written instructions instead of traditional markers. A well-stocked ch..