Trail Running Calendar United Kingdom 2026-2027

An off‑road marathon on 16 May 2026 along the Tissington and High Peak Trails finishing at Cromford Wharf. The festival also includes a half marathon from Friden and a 10K from Harborough Rocks.

A 5 km muddy obstacle course at Braunstone Park on 16 May 2026 where participants climb, crawl and slide through a circular course. Minimum age 13, limited weather-dependent parking, and a minimum fundraising target of £50.

A community Pretty Muddy 5k obstacle course in Singleton Park on 16 May 2026, with mixed grass and path terrain, staggered wave starts and accessibility provisions including sunflower wristbands and BSL stage content.

Race for Life Brentwood at Weald Country Park on 16 May 2026 offers 3k, 5k and a double lap 10k across grass and woodland trails. The event is chip timed and carries a minimum fundraising target of £50.

A mountain race on Cader Idris of 16.9 km with 915 m of ascent, run on a partly marked route that requires navigation and experience. Entries open online with a limit on competitors and chip timing in place.

Experience a fundraising trail run through the grounds of the Badminton Estate. Choose from multiple distances including a team challenge while enjoying a community atmosphere with a post race BBQ and refreshments.

A community organised 5k and 10k trail run or walk in the Cotswolds on 16 May 2026, offering adult and junior categories and raising funds for the Village Hall and the North Cerney School Association.

A cross-country *10 km* race at Priory Park, Reigate on 17 May 2026, organised by MCC Promotions with on-day registration, hydration stations, basic facilities and support for the charity Sport In Mind.

A 400 km, eight day expedition through remote Highland landscapes from Knoydart and Kintail to Cape Wrath, with daily tented camps. The Cape Wrath 100 offers a three day version covering the final stages.

A circa 13.2 mile trail race around Black Hambleton and Silton Woods near Osmotherley, featuring forest tracks, ancient trods and moorland views. Entry is by pre-entry only, limited to 50 participants aged 18 or over.

A 26.2 mile walk/run from and back to Alstonefield in the White Peak with 4800 feet of ascent and descent. Six manned checkpoints, locally made hot food at the finish, and certificates and cloth badges for finishers.

A traditional Peak District fell race in Youlgrave on Sunday 17 May 2026, covering about 5.8 miles of rough trails, fields and limestone descents. Pre-entry costs £6 and all profits go to Youlgrave Parish Council.

Test your limits at the MacTuff Really Muddy 5k and 10k in Aberdeen. Navigate a course of mud water and obstacles to receive your technical T shirt and finishers medal.

An off-road mud run in Aberdeen on 17 May 2026 with 5 km and 10 km options for adults and supervised teenagers. The course includes mud, water and obstacles; entries include a Tec T shirt, finishers medal, free parking and photos.

Five and ten kilometre trail runs around Derwent Reservoir on 17 May 2026, with firm trails, some grass and woodland. Live chip timing, Canicross friendly, finishers get a medal and merchandise.

A community multi-terrain 10 km trail run in Cookridge, Leeds on Sunday 17 May 2026. The single lap route passes Paul’s Pond and Golden Acre Park, includes a grass hill and woodland sections, and all participants receive a CC10K t-shirt.

Join the Calderdale Way Relay on Sun 17 May 2026 for a scenic but savage 80.5 km team challenge across the South West Pennines with 3660 m of climb. Teams of 12, pre entry only, runners run in pairs and strict kit rules apply.

Tackle a steep 3 km fell race up Shutlingsloe in the Peak District on Sun 17 May 2026 with 270 m of ascent for a short punchy challenge. On the day entry is available and the race is part of the Wildboarclough fete.

Explore the scenic parish of Deddington on a 5k, 10k, or 20k run through local farmland. This community event supports local schools and the Firefighters Charity while welcoming runners of all abilities.

A short out-and-back fell race from the field beside the Lantern Pike pub in Little Hayfield, climbing to the summit and returning. Entry is on the day for a small fee and a separate shorter junior race follows.