Trail Running calendar near Harwell 2025-2026

Tackle the Envious Run on 18 January 2026 at Pengethley Manor, a scenic offroad loop through vineyards with a hill each lap. Choose any distance from 5k to ultra or run virtually in January for a finishers medal.

Join Ryde Harriers for a three race cross country series at Smallbrook Stadium in Jan and Feb 2026, with a testing 10 km course and a 6.5 km youth option. Expect varied terrain, team trophies and friendly club racing with limited entries.

Dirt Run is a trail running series across two rounds in Northamptonshire at Irchester in January and Brigstock in February. Tackle mixed trails and a notable hill, pick short or longer distances and earn a unique finisher medal.

Take on the Riverbank Rollick a scenic 9.6 mile off road trail run along riverside paths, through woodland and a stream crossing. Earn a metal finisher medal that links to two other Thornbury Running Club races for a collectable series.

Take on the Arundel and SDW Winter Trails 2026, a point to point off road run from Heyshott to Arundel by Arundel Castle. Choose marathon or 15 mile routes through rolling fields and riverside trails and cross a scenic suspension bridge.

Take on a three hour trail challenge from Holmbury St Mary and complete as many 5 km laps as you can across scenic Surrey Hills trails and the climb to Holmbury Hill. Entry includes a bowl of chilli or curry and a headtorch is required.

Take on the Crocodile Challenge at Ryton Pools Country Park, a timed six hour loop where you run as many laps as you like around scenic pools. Canicross and rucking welcome with dogs on short leads; finishers get a medal and a portion of fe..

Run a scenic, flat trail through Alexandra Gardens near Windsor Castle with 10K and half marathon options. Chip timed, marshalled and offering free photos, post race goodies and a tech tee deal.

Tackle scenic, eco friendly trail races through Ashdown Forest at Pippingford Park, with 10 and 5 mile options over rolling, hilly trails. Enjoy forest views, supportive volunteers, bespoke medals and cash prizes for top finishers.

Experience iconic views of Stonehenge on the Stonehenge Stomp, a friendly walking event that also welcomes runners. Choose routes from 5 km to 40 km and book online when entry opens on 1 November 2025 as places are limited.

Choose the Moors Valley Wildwood Trail Half Marathon or 10K through scenic woodland and muddy gravel trails where deer and birds of prey may appear. Chip timed, eco friendly event with aid stations and a wooden finisher medal.

Run scenic trails on the South Downs at Queen Elizabeth Country Park with 8, 15 or 22 km routes through woodland and rolling chalk tracks. Dog friendly, timed and offering water stations and finisher medals, it suits runners of every level.

Join the G3 Series on Saturday 31 January 2026 for scenic 15 km and 10 km runs near Hound House Road in Surrey. Friendly, well signed courses and easy parking make this a perfect winter tune up for runners of all paces.

Event overview DirtRun Dudmaston 10k takes place on 1 February 2026 at Comer Woods, part of Dudmaston Estate. The event uses an off-road route around tracks and trails in Comer Woods and covers 10 km. All finishers receive a medal and finis..

Join a guided 10km trail run around the Devil's Punchbowl in Hindhead, enjoying rolling hills and a scenic pause with great views. This friendly group paced run is led by an experienced guide and runs at sunset or by headtorch in winter.

Take on the Squirrel Challenge at Daventry Country Park, a six hour off road loop where you run, hike or walk repeated 3.3 mile laps to hit half marathon, marathon or personal goals. Canicross and rucking welcome, with cafe and park trails..

The Westonbirt Arboretum Winter Night Race is a unique running event set in the stunning National Arboretum, featuring over 2,500 tree species. Participants can choose between 5km and 10km routes, which offer a beautiful and varied landscap..

Maverick Original West Sussex invites trail lovers to tackle 6 km, 12 km or 22 km routes across the South Downs from Amberley Museum. Expect steep technical hills, on course water stations, timing and a wooden finisher medal.

Hibernal Hills at Queen Elizabeth Country Park offers 50 mile, 50K and 20 mile single loop trail races across the South Downs. Expect about 99% trail, 6400 ft of climbing, seven aid stations, live GPS tracking and a bespoke finisher medal.

Run the Pilgrim Challenge along the North Downs Way from Farnham to Canterbury, passing historic countryside and charming villages. Choose 33 miles in one day or 66 miles over two days with overnight support, checkpoints and full event serv..