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 2183 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.

MacTuffX Swansea at Neath Sports Centre on 26 September 2026 offers Solo, Doubles and Relay formats over two distance options combining ten functional Xercises and running. Entries require participants to be 18 or older; a LITE weight divis..

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 near Monymusk on 26 September 2026 with 430 m of climb and pre-entry only registration; listed 2024 fees are shown and parking is at Monymusk Village Hall.

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.

Trail races at Salisbury Racecourse offer marathon, half marathon and 10 km over undulating downland with woodland and Martin Down turf. GPX routes are provided and finishers receive a medal; top three men and women earn trophies.

Trail running at Billingford Lakes on 27 Sept 2026 using a 5.3 km out-and-back loop on mixed surfaces. Parking and a base-camp aid station are provided; the event is cupless and all finishers receive a bespoke medal.

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.

Classic Peak District fell run from Stoney Wood, Wirksworth with an undulating 13.7 km course and 457 m of climb that rewards strong legs and scenic views. Pre entry is required for the Sept 27 2026 race so book early and bring a cup to red..

A 10 km trail run through the grasslands and woodlands of Rising Sun Country Park on 27 September 2026, with mixed terrain and a canicross option allowing one well controlled dog per runner.

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