Trail Running calendar near Harwell 2025-2026

The SATURN Remembrance Day Run 2025 - South is a commemorative running event held at Wraysbury Skiff & Punting Club, Egham, along the scenic River Thames. Participants can run a flexible distance within a 6 hour and 32-minute timed challenge, with laps of approximately 7km (4.37 miles) or a shorter..

The One by the Canal is a scenic half marathon trail run starting at Cowley Recreation Ground and following the Grand Union Canal's picturesque natural surroundings, finishing in Watford's Cassiobury Park. The course features country trails and woodland paths, marked and marshalled for safety, with..

DirtRun In The Dark is an off-road running event held at The Wyre Forest, Callow Hill Visitor Centre. Participants tackle a 10km course consisting of two laps around forest tracks and trails, all run in the dark, making torches compulsory. The race welcomes runners aged 14 and above and allows canic..

Bath Skyline 5km & 10km, a Relish Running Races off-road event at West Car Park, University of Bath (BA2 7AY), features night and day races across 5km and 10km, plus a daytime 500m kids' run. The hill-top routes traverse woodland trails, meadows and trails with views over Bath; expect muddy sections..

New Forest Central Trail Run is held at Roundhill Campsite in the New Forest National Park, Beaulieu Road, Brockenhurst (SO42 7QL). It offers 10km, 17km, and 22km trail routes on wide, hard-packed gravel tracks that pass through ancient woodland and heathland, with opportunities to spot native ponie..

Centurion Running's Wendover Woods 50 is a 50-mile ultramarathon held in Wendover Woods, Aston Hill, Halton, Aylesbury. The course comprises five 10-mile forest loops on soft trails and tracks through Wendover Wood, offering runnable descents, steep ascents, and technical sections, with a total elev..

The Rugged Radnage 10K Run, held in the Chiltern Hills near Radnage village, offers a challenging mixed-terrain course featuring roads, trails, footpaths, woods, and fields with notable ascents and descents. The event includes both 5K and 10K distances, with the 5K covering half of the 10K route. It..

5th Sundon Saunter, run by the Beds Bucks & Northants LDWA group, is a multi-distance social challenge walk. Set at Barton-le-Clay Village Hall (MK45 4JY), it offers 27- and 18-mile routes for walkers and runners, plus a 13-mile option for walkers only. The route follows field paths, tracks, woods a..

Roly's Run 2025 is set in the Meon Valley, Hampshire, with Race HQ at Swanmore Village Hall. The event offers 15-, 20- and 40-mile options, with walkers welcome on the shorter routes and the ability to swap between 15/20 on the day. The clockwise courses start at Swanmore, passing Beacon Hill, Exton..

The Avebury8 Nine is a small, highly regarded trail race set in the Avebury World Heritage Site in Wiltshire. The roughly 9-mile course starts and finishes in Avebury, with the route starting on Bray Street, heading north to Yatesbury Lane, through Yatesbury, and returning to Avebury High Street to..

Broadway Marathon & Half Marathon, organized by Cotswold Trail Events, takes place in Broadway, Worcestershire, in the northern Cotswolds. The event offers two distances: a marathon and a half marathon. The route is a longer, hilly, muddy tour featuring trails and mostly unpaved tracks, with a few m..

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..

Petzl Night Trails 10K – Salcey Forest is a Friday evening trail race at Salcey Forest, near Northampton (NN7 2HX). The 10K course is two laps on crushed-stone tracks with detritus that can be slippy; the route is marked and flat, though uphill sections feel tougher over 10K. Expect a dark, torch-li..

Dormouse Challenge is held at Salcey Forest, near Northampton, England. This six-hour event welcomes runners, walkers and canicross participants to compete together, choosing how many 5k laps to complete on a 3.5-mile off-road loop. Distances are flexible: you can cover about 5k or push on to more t..

The STAR Backyard Peaslake is a trail running event held in the picturesque village of Peaslake, Surrey. Participants aim to complete as many 5km laps as possible within a 3-hour window, starting and finishing at Peaslake Community Hall. The course features a clockwise route that includes a gentle 2..

Dark Valley, Night Trails is an exhilarating night-time running event hosted by BigFeat Events at Moors Valley Country Park. Participants can choose from 10km, 20km, or 30km looped trails, all set amidst the enchanting woods of Dorset. Runners will navigate the course using headtorches, guided by fl..

Bournemouth Coastal TEN is a seaside running race held at Hengistbury Head, Bournemouth, Dorset. Runners choose between a scenic 10-mile or 10km coastal route along Bournemouth’s seafront, with views of Boscombe Pier, the Isle of Wight and The Needles to the east, and Old Harry Rocks along the Juras..

The RunUk Kingston 10k is a scenic running event starting and finishing at the Kingston Hawker Centre in Surrey. The course takes runners through the streets of Kingston and along the picturesque river towpath, offering a vibrant atmosphere supported by local organizations. Participants receive a fi..

The ATW Wendover Woods Trail Run & Canicross takes place in the scenic Wendover Woods, located at the highest point in the Chilterns near Aylesbury. Participants can choose from a 5K, 10K, or Half Marathon trail run, all set on well-prepared, traffic-free woodland trails offering stunning countrysid..

The Action Heart Tuff Un is an annual multi-terrain running event held at Baggeridge Country Park in Dudley. Covering approximately 6 miles, the course features undulating trails, muddy paths, and a shallow stream crossing, offering a challenging yet rewarding experience for runners of all levels. W..