Trail Running calendar near Grafham 2026-2027

A 5k muddy obstacle course at Willen Lake with staggered wave starts, on-site toilets and parking, blue badge parking nearby, and a fundraising target of £50. The event is not wheelchair accessible.

Derby Pretty Muddy 5k is an obstacle course at Markeaton Park with climbing, crawling and sliding across mixed terrain. It is for participants aged 13 and over and includes a fundraising element, a kit pack and a finisher medal.

An evening marathon that follows canals, waterfalls, vineyards, woodland and coastal saltmarshes, running from early evening into the night. Registration for the 2026 edition is closed.

A Backyard Ultra at High Lodge Thetford Forest where runners repeat a 4.167 mile loop each hour until one remains. Chip timing, on site camping, food vans and optional 6 hour and 12 hour timed entries are available.

At Prospect Park in Reading this Race for Life event offers a 10k run as two laps of the 5k course plus a separate 5k option, with grass and woodland terrain and some steep slopes.

A mixed road and country run around Ousden in Suffolk offering 5k, 10k, half, full and ultra options with loop and out-and-back formats, regular aid stations, onsite parking and bespoke finisher medals.

Trail running and cycling around Gosmore and Hitchin in the Chilterns AONB with 10 km, half marathon and marathon options, riders starting ahead of runners and a children’s event on the village green; some proceeds support charities.

A trail Half Marathon and 10k at Carsington Water in Derbyshire on 26 June 2027, featuring waterside and countryside routes. Entries include chip timing, photos and a themed medal, with marked trails, marshals and a GPX route file.

A point to point half marathon along canal towpaths from Wolverhampton to Brindley Place in Birmingham, featuring a 360 metre tunnel, time trial wave starts and floating drink stations every 3 miles.

A flat 10 km trail run through Thursley National Nature Reserve near Thursley, Surrey. Group runs include dusk and night options with headtorch guidance, an entry fee of £22 per person, and kit and torch support available.

A mixed-terrain trail event along the Thames at Remenham Farm on 4 September 2027, offering a half marathon, a 10K and a junior race for under 11s with chip timing and themed medals.

Guided 10 km trail run around Silent Pool near Guildford, following parts of the North Downs Way and Netley Heath forest. Sessions run at dusk or at night with headtorches in a led group and a recommended pace of about 10 min per mile.

A 100 kilometre trail ultra on an anticlockwise loop through the Chiltern Hills that visits Ashridge Estate, The Ridgeway, Coombe Hill and Bledlow Ridge. Fully marked route with GPS tracking, six checkpoints and a 19 hour time limit.

A trail Half Marathon and 10k around Carsington Water on 16th October 2027, set on waterside paths and countryside trails in Derbyshire. The event includes chip timed results, a themed medal, GPX route files and an event village.

A guided 30 mile trail run from St Martha's Hill exploring the Surrey Hills and Box Hill with an experienced ultra runner and coach. Group pace, recommended 22 miles training, cost £55 and an alcohol free beer may be available.

A winter trail event at Carsington Water in Derbyshire offering a half marathon and a 10k around the reservoir. The event includes chip timing, a themed medal, marked routes with GPX files and an event village with food and free photos.

A guided 12.5 mile trail run around Box Hill that gains about 1000 metres of elevation across woodland, heathland and open fields. Group pace with technical climbs and scrambling and a chance of an alcohol free beer at the finish.