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 2252 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.

Tower to Castle Ultra 30 covers 30.9 miles from Blackpool Tower to Lancaster Castle with a ferry crossing at Fleetwood, way marked sections and compulsory checkpoints. Pre registration is required and entries close 20 September 2026.

A forest running event in Warwickshire on 26 September 2026 with a 27 miles marathon and a 20 miles short course. Routes run through early autumn woodland with staffed checkpoints and proceeds supporting the Heart of England Forest.

MacTuffX Swansea at Neath Sports Centre on 26 September 2026 combines ten Xercises with runs over Classic or Double distances. Entries are available in Solo, Doubles and Relay categories, with an optional LITE weight division.

A community fell race in the Ceiriog Valley on 26 September 2026, covering 11.6 km with 425 m ascent. Entry on the day; refreshments, showers and changing facilities are provided at Canolfan Ceiriog Centre.

A 30 km hill race from Traquair House to Broughton Ales across the Scottish Borders with roughly 1500 m of ascent. The route uses hill tracks and open heather, has eight marshalled checkpoints and requires mandatory emergency kit.

A five-lap ultramarathon in Berkeley, Gloucestershire across 25-27 September 2026, covering about 130 miles and 15,000 ft of ascent with a 24 hour cut off and 120 places, organized from Hamfields Leisure with camping and tracking included.

Three community races at Harcourt Hill on 26 Sep 2026 from a 10k off road course to a 1k fun run, organised by the 4th Oxford Scout Group with medals, prizes and water stations for participants.

Guto Nyth Bran is a 9.6 km fell race near Caerphilly with 396 m of climb on a partially marked course. It takes place in late September, has a short walk from parking to the start, and charges £6 online or £8 on the day.

A fully waymarked, supported sea-to-summit ultramarathon from Caernarfon Castle to Bron y Feds Uchaf, covering 29 miles (47 km) with about 5,600 ft ascent. Pit stops, professional medical cover and GPS tracking are provided.

PARAS'10 Catterick on 26 September 2026 is a 10 mile multi terrain endurance event at Catterick Garrison. It includes a 10 mile bergen category, a canicross option, and supports the charity SUPPORT OUR PARAS.

An 11 km hill race with 430 m of climb near Monymusk. Entry is by pre entry only via Webscorer, and entry fees are listed as 2024 prices with registration details to be confirmed.

A charity relay in Malham on 27 September 2026 with mixed teams formed on the day and an entry fee of £5 per person. The route climbs near the summit of Cawden Hill then returns on a direct descent.

Trail race at Margam Country Park offering 5 km and 10 km routes through woodland with castle views. The event features chip timing, water stations, a finisher's medal and parking included with entry.

Trail running festival at Dalkeith Country Park near Edinburgh offering distances from a family mile to an ultra marathon. Courses use woodland trails, firm paths and grassy sections, and one well controlled dog per runner is allowed.

Experience an autumn run through scenic pumpkin fields and farm tracks in Colchester. With 10k, 5k, and 1k distances, this flat off road event features chip timing and a family friendly event village.

A late September trail half marathon through the Forest of Dean, organised by the Rotary Club with proceeds to charity. The measured course stays on way marked forest trails with no road crossings and water stations roughly every 5 km.

Explore the ancient trails and historic landscapes of Cranborne Chase starting from Salisbury Racecourse. Choose between marathon half marathon or 10k distances through scenic downland and woodland paths.

Trail running at Billingford Lakes on the Wensum Way with a 5.3 km out-and-back lap, lap-based half and ultra options, on-site aid, included parking, bespoke medals, and a finish coffee and cake.

A village based fell race on 27 September 2026 covering 11.3 km with 415 m ascent. The course is marshalled and partially flagged, basic waterproof kit is required, and prizes are awarded by age category and teams.

A 5 mile mixed terrain race around the southern fringes of Knaresborough, featuring trails, woodland and riverside tarmac. Single lap format, prizes for top finishers and fundraising for Dementia Forward.

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