Trail Running Calendar United Kingdom 2026-2027

Welcome to the most comprehensive guide to trail races in the UK for 2026-2027! Our curated list features an impressive 2282 trail runs across the enchanting landscapes of Scotland, and Wales. From the iconic trails of London's green outskirts to the rugged terrains near Birmingham, from Glasgow's scenic paths to Liverpool's historic routes, we've got every trail enthusiast covered.

Whether you're a seasoned trail runner looking for your next challenge or a newbie eager to explore the world of off-road running, our calendar is your one-stop solution. Dive deep into the details by searching for a specific location or simply browse through to discover new trail runs. Looking for all running events? Check out the complete Running Calendar United Kingdom on running.life.

A 102 mile self navigation ultramarathon across Snowdonia Eryri with 5,172 m of ascent, 11 checkpoints and a 42 hour cut off. Entrants need prior 50 mile ultramarathon experience, mandatory mountain kit and GPS tracking.

A trail running event on 5 September 2026 at Kielder Castle marking Kielder Forests centenary. Routes range from 6 km to 50 km, with forest trails, outposts for refills and onsite camping options.

A 45 mile mountain ultramarathon in Snowdonia Eryri around Betws y Coed, with significant ascent, five supported checkpoints and a 20 hour cut off. Entry requires prior ultramarathon and mountain experience and mandatory kit must be carried..

A fully supported cross-country challenge across Dartmoor offering 50 km and 30 km routes with staffed checkpoints, map and GPS support, and Mountain Leaders providing navigation and first aid.

The Bullock Smithy Hike is a 56-mile circular ultra-hike or run organized by a local Scout group. Held over a weekend in September, it starts and finishes in Hazel Grove.

A community fell-race day in Edale on 5 September 2026 with three events: a team barrel race for teams of eight, an individual fell race on the same course, and a children's Half Pint. Proceeds support local primary schools.

Tackle a scenic 12 or 24 hour loop around Loch Morlich in Glenmore Forest, testing endurance on a supportive, compact course. Limited entries and a runners welfare hub at The Hayfield make for a friendly, focused event.

Experience the scenery of Malham Cove and Malham Tarn in this licensed trail half marathon. Enjoy a well supported route with post race meals and unique local rewards in the heart of Malham.

Trail running in the Shropshire Hills from Carding Mill Valley with Marathon, Half Marathon and 10K options across The Long Mynd and National Trust land, waymarked route, on-course aid stations and a finishers medal.

A Backyard Ultra at Hardwick Hall Estate where runners repeat a 4.16 mile loop every hour until only one remains. The route crosses estate trails, farmland and woodland with on site aid and first aid support.

An eight-hour trail challenge at Borders Forest Park where runners complete as many 4.366 mile loops as possible. Lap timing is by wristband and laps count toward half, full or ultra marathon distances.

A fell race run alongside Britain’s historic Longshaw Sheepdog Trials, held on a route across the Longshaw estate. The course is about 7.1 km with 237 m of climb and entrant admission includes access to the sheepdog trials.

Experience a challenging 6 mile moorland race across the rugged terrain of Dartmoor including steep climbs and woodland trails. This historic off road event finishes with a fast downhill run at the iconic Haytor Rock.

A traditional fell race from Glenridding around Catstye Cam, Helvellyn, Grisedale Tarn and St Sunday Crag with manned checkpoints, compulsory mountain kit and limited entries. The route includes specific path requirements to protect sensiti..

Two ultra-distance events along the Saints Way Trail in Cornwall on 05 September 2026, offering 28-mile and 56-mile routes, live GPS tracking, feed stations, medals and race photography.

A muddy obstacle course in Brentwood, Essex, offering 5 km and 1.5 km routes with mud, foam and achievable obstacles. Facilities include wash-downs, changing rooms and a finisher medal.

Enjoy a scenic trail run through the Staffordshire countryside starting and finishing at a canal side pub. This charity event features a 10k route followed by evening food and music.

Trail races around Derwentwater in Keswick offering 5K, 10K and 15K routes on marked, marshalled trails with an event village, water stations and on site medical cover.

A series of runs at Westonbirt Arboretum in Sept 2026 and Feb 2027, offering distances from 1 mile to half marathon on solid forest paths, with marked courses, feed stations, event medals and age‑based entry rules.

Trail races from Barmouth beach to Cadair Idris across coastal, forest and mountain terrain, offered in three distances with marked routes, GPX files, marshals, chip timing and post-race refreshments.

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