Trail Running calendar near Harwell 2025-2026

The Colworth Marathon Challenge is a unique running event held at the scenic Colworth Estate in North Bedfordshire, UK. It features three races over three days, combining distances of 5 miles, 8.1 miles, and a half marathon of 13.1 miles, totaling the full marathon distance of 26.2 miles. The event..

The Zigzag Cock-A-Doodle Dawdle is a trail running event held at the exclusive Hyde Hall Farm in Hertfordshire (SG9 0RU). Returning for its third year, it offers multiple distance options including 5k, 10k, 15k, Half Marathon, Heavy Half Marathon, Full Marathon, and Ultra Marathon. The course featur..

RunThrough Marlow Trail Run, held at Marlow Rugby Union Football Club on Riverwoods Drive, Marlow, unfolds as a scenic all-trail event in the Thames Valley. Runners choose from Half Marathon (one lap), 10K (one lap), or 5K (two laps), all on well-marked off-road routes through local countryside. The..

Devil's Punchbowl 10km is a guided trail run around the Punchbowl in Hindhead, Surrey. The 10km route follows scenic trails with several hills, run at a group pace rather than a race. It suits those new to trail running or who prefer running with others, especially at dusk or night.Top views are pau..

Essex Way Ultra is an 82-mile out-and-back ultra running event spanning the full Essex Way from Epping tube station in London to Harwich’s High Lighthouse. The course covers a mixed surface route of trail, footpath, track and road, with a total elevation gain of about 3,469 feet. The event, billed a..

The PIGUM 2026 is a thrilling 30-mile ultra marathon set in Abergavenny, known as the Gateway to Wales. This challenging trail run features 5,000 feet of elevation, taking participants over mountain peaks and scenic trails, including the iconic Sugar Loaf mountain, which offers stunning panoramic vi..

The Birmingham Black Country Half Marathon (BBCHM) is a point-to-point half marathon from Wolverhampton City Centre to Brindley Place in Birmingham, run mainly along canal towpaths. The course is largely flat with some locks and bridges and features the notable Coseley Tunnel (360m). It uses seeded..

The Bishop's Stortford Mitre 10k, 5k, and 1k is a community road race held in East Hertfordshire, starting from Jobbers Wood sports ground near Much Hadham. Open to all ages and abilities, the event features professionally measured 10k and 5k courses on traffic-free country lanes with gentle undulat..

Fen Gallop 2026 is a scenic running event held in Willingham, Cambridgeshire, featuring flat, multi-terrain courses along country roads, footpaths, and bridleways. Participants can choose between a 10K race or a shorter 4-mile option, both offering chip timing. The event welcomes runners aged 15 and..

Chiltern Ridge Half Marathon is a 21.1km trail race along The Ridgeway National Trail in Buckinghamshire, starting and finishing in Wendover. The course runs from Wendover to Whiteleaf Hill Nature Reserve near Princes Risborough, with a forested loop en route before returning to the start. It is a f..

The Thursley Common 10km is a scenic trail running event held at Thursley National Nature Reserve in Surrey, one of the largest heathland areas in the region. The 10km course is notably flat, making it ideal for trail running beginners and those seeking a relaxed group run experience. Participants e..

The MTC Severn Way Ultra is a 57-mile point-to-point ultra along the Severn from Travelodge Worcester to Travelodge Stonehouse in Gloucestershire, passing Grimley, Worcester, Upton-on-Severn, Tewkesbury, Gloucester, Epney, Priding and Frampton-on-Severn. The route is described as comparatively flat,..

The Spitfire Scramble is a unique 24-hour multi-terrain relay or solo race held at Albyns Farm, London Borough of Havering. Participants can run solo or in teams of two to eight, tackling a 5.75-mile lap repeatedly through day and night. The course spans areas managed by Havering and Forestry Englan..

Limitless Trails’ Black Mountains event is a mountain-running challenge set in the Brecon Beacons. The program offers four distances: 50‑mile Ultra, 32‑mile Ultra, Marathon, and Half Marathon (13 miles). Runners start and finish at Longtown Hall in Herefordshire, with routes weaving through the Blac..

Ultra:5K Kempston is held at Box End Park, Box End Rd, Kempston MK43 8RQ. The event, scheduled for Sunday 12 July, offers a simple but challenging format: participants run a 5K on the hour, every hour, for five hours. A three-race option is also available.Competitors accumulate time across the chose..

The Cider 5K.ish is a one-lap, 5-kilometre trail run/walk set on Myncen Farm in Minchington, near Blandford Forum, Dorset. The undulating course takes you across fields, grass, wildflowers, crops and dusty tracks on private farmland with permission from the owner. The event is designed as a fun, rel..

The 24 Cider Challenge is a 24-hour solo running or walking event held at Myncen Farm in Blandford Forum, Dorset. Set on a privately owned farm, the course features undulating trails through fields, grass, wildflowers, crops, and dusty tracks, offering a scenic and natural running experience. Partic..

The Cider Challenge Solo is a 12-hour trail-running event held on a privately owned farm in Dorset (Myncen Farm, Minchington, Blandford Forum, DT11 8DH). Designed for solo runners, with the option to enter as part of a team, participants have 12 hours to run or walk as many laps as they can. The und..

The Bell Plod is a friendly, relaxed trail run/walk organised by Running Events Devon, held at Myncen Farm in Minchington, Blandford Forum, Dorset. The one-lap course runs on a privately owned farm, by permission of the owner, weaving through fields, grass, wildflowers, crops and dusty tracks for an..

ON TOUR - The Bumble Plod is a relaxed, family-friendly trail event organized by Running Events Devon. It takes place at Myncen Farm, Minchington, Blandford Forum, Dorset. The course is a single lap through privately owned farmland, including fields, grass, wildflowers, crops, and dusty tracks, desi..