Trail Running calendar near Harwell 2025-2026

We have found 348 Trailruns within 80 miles of Harwell. See below where and when you can find the races.

The Bradley Fell Race, organized by the British Open Fell Runners Association (BOFRA), takes place in Bradley Village near Skipton, North Yorkshire. The race covers 3.5 miles (5.6 km) with an 800-foot (274 meters) climb, starting with a steady ascent through fields and tracks to High Bradley, follow..

The Sandridge 10k is a scenic trail running event set in the picturesque village of Sandridge, near St Albans. Participants can enjoy a beautiful 10k course that showcases the natural beauty of the area. The event is organized by Active Training World, and it promises a rewarding experience for both..

The Run London Epping Forest Trail 10k is a popular running event scheduled for September 14, 2025, in the scenic Epping Forest, Chingford. Participants will complete a 10k course consisting of two laps through the forest, known for its rich biodiversity and beautiful landscapes. The race is designe..

The Alf Shrubb Memorial 10k and 5k are mixed trail races held in Slinfold, West Sussex, celebrating the legacy of local running legend Alf Shrubb. The event features chip-timed adult races on scenic routes through Sussex countryside, with the 10k consisting of two laps on local footpaths and bridlew..

The Dunstable Downs Challenge Half Marathon is a scenic trail running event organized by Dunstable Road Runners, held at Creasey Park Football Centre in Dunstable. The 13.1-mile course takes runners across the picturesque Dunstable Downs and surrounding rural areas, primarily on public footpaths and..

The Ashtead 10k and 2k fun run, organized annually by Ashtead Running Group, takes place at The Scout Hut, Woodfield, Ashtead. The event features a 10k race and a 2k kids' run on rough, undulating tracks around Ashtead Common, a protected Site of Special Scientific Interest and National Nature Reser..

The Guided Half Marathon - Winchester will take place in Winchester on Saturday 20 September 2025. You can run 13 miles.

The Cotswold Way Century is a challenging 102-mile non-stop trail running event along the Cotswold Way National Trail, starting in Chipping Campden and finishing in Bath. The single-stage race follows public rights of way, featuring a very hilly course with a mix of hard stone tracks, grassy paths,..

The Cotswold Half Way is a challenging 47-mile trail running event held along the scenic Cotswold Way National Trail in Gloucestershire, England. Starting in Chipping Campden and finishing in Painswick, the race features a single-stage, non-stop course that traverses a variety of terrains including..

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The Yard Trail Races, hosted at Chilton Manor Farm in Hampshire, offers participants two scenic routes: a 10k and a 10-mile trail run. Both routes begin and end on a historic avenue lined with 800-year-old Yew trees, providing stunning views. Runners are welcomed at the finish line by friendly marsh..

The Centurion Chiltern Wonderland 50 is a challenging 50-mile ultramarathon set in the scenic Chiltern Hills of South East England. The single-loop course features 5,600 feet of elevation gain and loss, traversing picturesque villages and historic sites known from British film and television. Starti..

Hambledon Hilly is an annual running event held at the scenic Hambledon Vineyard in Hampshire, England, the country's oldest commercial vineyard. Celebrating its 10th edition in 2025, the event features multiple race distances: 1km and 2km for children under 12, 5km for ages 12 and up, 10km for 15 a..

The Conquest of Avalon is a scenic ultra running event held in Somerset, England, finishing in the legendary town of Glastonbury. It offers two distances: a 30-mile and a 50-mile race, both primarily following the historic Leland Trail with the 30-miler diverting onto the Lands End Trail. The course..

The Triple Trail Races, held at Loddington Farm in Kent, offer three challenging distances—25km, 50km, and 100km—through some of the region's most scenic and historic trails, including the North Downs Way, Greensand Way, and Weald Way. The 100km race is Kent’s only single-loop ultra marathon, showca..

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The Humanity Direct Tring Ultra is a one-day ultra marathon held in the scenic Chilterns near London, starting and finishing at Tring Cricket Club, Hertfordshire. Participants can choose from three distances: 50km (31 miles), 27km half ultra, or a 10km option. The course features natural beauty spot..

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BigSky Trails (AIR) is the final event in the Classic Element Trail Series, organized by BigFeat Events. Set in the picturesque New Forest National Park, this trail running event offers participants the choice of an 18-mile route or a marathon distance. Runners will experience stunning views and div..

The Ouse Valley Way Marathon and Half Marathon is an annual running event held in Huntingdonshire, featuring a scenic 26.2-mile route along the Ouse Valley from Earith to Eynesbury, or vice versa. The course is flat and combines grass, gravel, and tarmac paths, offering a varied running surface clos..

The Clipston Trail Half and Country 5 Miler is a scenic trail running event held in the countryside around Clipston, near Market Harborough. The event features two distances: a half marathon and a 5-mile race, ideal for both experienced trail runners and beginners. The courses start and finish at Cl..

The Creative Juices 10km is a scenic trail running event held at Woodoaks Farm near Rickmansworth, home to the Creative Juices Brewing Company. The course is predominantly off-road, featuring woodlands, footpaths, and bridleways, making it suitable for all abilities. Runners start and finish at the..

The Mells Scenic Race is a 7-mile running event held in the historic village of Mells, near Frome. Scheduled for September 21, 2025, the course combines footpaths, bridleways, cycle paths, and quiet country lanes, offering a scenic route with some hills. The race starts and finishes at Mells Cricket..