Trail Running calendar near Harwell 2025-2026

The Petzl Night Trails 10K at Salcey Forest is a unique night trail running event held near Northampton. Participants run a fully marked, two-lap 10K course on crushed stone paths through the flat but occasionally slippery forest terrain. Runners must use a head or chest torch to navigate the dark t..

The Hankley Common 10km is a guided trail running event held at Hankley Common in Elstead, Surrey. This scenic course features trails through an area rich in rare wildlife and historical landmarks, including the Atlantic Wall replica used for D-Day training. The run offers stunning views and a uniqu..

The Elephant 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, mainly on crushed stone and forest floor, with no asphalt. The event welcomes all abili..

Bath 50 Challenge, part of the Ultra Challenge series, takes place in the City of Bath with start and finish at Bath Racecourse Basecamp. Participants can choose a 50 km loop (about 1,000 m ascent), a 29 km loop (650 m), or a 10 km loop (~200 m). The course loops around Bath, offering panoramic view..

Run the Wild Half Marathon is a trail-focused 21km event set in the Chiltern Hills, starting from The Home Office in Tring, 30 minutes northwest of London. The route climbs roughly 300m and winds across chalk hills and through woodlands, offering stunning scenery rather than a road-race atmosphere...

Beyond Bristol, the Bristol Trail & Ultra by Beyond Trails offers two distances: a 25km Trail and a 55km Ultra, starting and finishing at Museum Square in central Bristol (BS1 4RN). The course travels off tarmac through woodland, riverside paths, parks, and disused railways, with highlights such as..

The Springtide 50k is an ultra running event held in the historic town of Arundel, West Sussex. This single-loop course offers a runnable, non-technical route through the scenic South Downs, making it ideal for beginners and experienced runners alike. Participants enjoy stunning views of rolling hil..

Ultra In The Black Country is a 32-mile ultra running event held at Baggeridge Country Park near Dudley, West Midlands. The scenic urban loop features mostly traffic-free paths, including disused railway lines, canal towpaths, tunnels, and woodland areas, showcasing the historic Black Country. The c..

Saturn's 7 Hour Time Challenge at Wraysbury Skiff & Punting Club (Wraysbury, TW20) is an inclusive, self-paced race along the River Thames. Entrants choose a distance from a 3 km lap, with full laps around about 7 km (4.37 miles) or a shorter 3.28 mile option depending on conditions. You can run as..

Chasewater Easter Egg Challenge is an annual multi-distance running event around Chasewater Country Park in Burntwood, Staffordshire. Runners can choose from 20k, 15k, 10k, 5k and a Junior Run, with routes described as multi-terrain and undulating around the scenic Chasewater Reservoir. The event is..

The Mortimer 10km is a scenic trail running event held in the charming Berkshire village of Mortimer, starting and finishing at Mortimer Fairground. The race features a beautiful two-lap, multi-terrain course that covers woodland trails, footpaths, and bridleways with an elevation gain of 85 meters...

Henley River Half Marathon, 10K & Junior Race, organized by RunThrough UK, takes place at Temple Island Meadows, Remenham Lane, Henley-on-Thames. The event offers three distances—the Half Marathon, 10K, and a Junior Race—on a scenic, mixed-terrain course along the River Thames. The route is undulati..

The Rosebud Marathon is a 26.2-mile section of the Rose of the Shires Ultra Marathon, set in Northamptonshire from Hartwell to Brixworth Country Park near Northampton. It’s a scenic, multi-terrain course with about 14 miles of cross-country trails, 10.4 miles of roads, and 1.8 miles on canal towpath..

Rose of the Shires Ultra is a flagship 54-mile ultramarathon in Northamptonshire, starting and finishing at Brixworth Country Park near Northampton. The circular route takes in 36.4 miles of cross-country trails, 15.6 miles of road and 1.8 miles along a canal towpath, with roughly three-quarters on..

Centurion Running’s 50 Mile Grand Slam 2026 is a four-race ultramarathon series, consisting of four 50-mile events on famed UK trails: South Downs Way 50 (11 Apr), North Downs Way 50 (16 May), Chiltern Wonderland 50 (19 Sep), and Wendover Woods 50 (14 Nov). The four races are grouped as All Four 202..

Spring ‘Run the Seasons’ Cowdray takes place on the Cowdray Estate in West Sussex, near Midhurst. The event offers 5km, 10km, 10-mile and canicross options, all run on a scenic course that heads out to Ambersham and Heyshott Common. These commons are Sites of Special Scientific Interest and Grade 2..

South Downs Way 50 is a 50-mile foot race along the South Downs Way National Trail, running from Worthing to Eastbourne. Runners begin with about six miles of chalk footpaths and bridleways to Chanctbury Ring, then follow the SDW for the final 44 miles to Eastbourne, finishing with a lap of the trac..

Battle of the Brampton Valley Way is Race Harborough’s ultra-distance challenge along the traffic-free Brampton Valley Way, spanning 28 miles (45km) in total with two 14-mile legs from opposite ends (Market Harborough/Leicestershire or Northampton/Northamptonshire). The mostly flat, hard-packed surf..

Nene Valley Races' Kings Cliffe 10k is a 10-kilometre trail race held in Kings Cliffe, Northamptonshire, starting and finishing at KC Active on Kingsmead. The circular course runs along easy tracks, green fields, farm tracks, and disused railway paths through the Northamptonshire countryside and the..

Wild Horse 200 South Wales is the home of 200-mile racing in Wales and a life-changing ultra marathon traversing the wilds of South Wales. The route threads iconic Welsh trails, starting in Chepstow and finishing at Worm’s Head, and links Offa’s Dyke with the Beacons Way before catching the Heart Of..