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 2338 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.

Run through scenic vineyard hills at Denbies Wine Estate in Dorking on 16 May 2026 on a 5.3 km undulating off road loop. Choose as many laps as you like for distances from 5 km up to ultra with flexible start times and limited places.

A new 50K route from Telford Town Park to Shrewsbury that visits multiple historic Shropshire sites. The event includes chip timing, five nutrition stations, measured routes, free photos and a special series-linking segment medal.

A fell running event at Meldon Reservoir featuring a five mile senior race climbing 1,362 ft to High Willhays and return, plus junior races over 2 km and 4 km. The course requires self navigation and includes compulsory checkpoints.

A 24 hour looped trail event in Inverkip where runners complete as many 5.9 km laps as they wish. Everton Scout Camp provides camping and on site facilities while the event features tiered finisher medals and festival activities.

Trail running from Sudeley Castle in the northern Cotswolds with routes from 7 km to 51 km, marked trails, outposts and mandatory kit requirements for longer distances.

A timed lapped event at Mowsbury Park on 16 May 2026 offering distances from 5 km to ultra with a seven hour time limit, flexible start window and both medal and no medal entry options; places capped at 75.

Test your grit on a Royal Marines designed obstacle course through the Cheshire mud. Choose between 6 km and 10 km routes featuring over 30 tactical challenges and a vibrant event village celebration.

A 5.2 mile fell race with 1,200 ft ascent from the Craven Arms in Appletreewick to Simons Seat and back. Entry is for over 18s and the £10 fee includes a drink to be taken at the finish line.

A 50 mile relay for teams of four from Sedgwick near Kendal to Lea Town following the Lancaster Canal. The signed course has seven checkpoints, medical support, chip timing, live tracking, and a 13 hour combined cut off.

The Uplawmoor Festival of Running returns in May 2026 with a fast 9 km road race. The challenging course features significant climbs and a fast downhill finish, with all proceeds supporting mental health charity SAMH.

A weekend obstacle race in Henley on Thames on May 16-17, 2026, featuring Sprint, Super and Beast distances plus a Kids Race and spectator tickets, run along historic town landmarks and a riverside course.

A 15.5 km mountain race on the Isle of Arran with 870 m of ascent, starting and finishing at Ormidale Pavilion in Brodick. The route climbs Goat Fell via the standard tourist path and requires specific mountain safety kit and hill support.

An uphill only 7.2 km race gaining 670 m to the summit of Glas Tulaichean on mixed double track and open hill, hosted by Dundee Hawkhill Harriers at Dalmunzie Estate. A free approximately 1 km fun run is available for younger runners.

A trail event with 10K and 10 Mile options across Holcombe Moor in collaboration with the National Trust. Routes start at Hare & Hounds and pass Peel Tower, Redisher Woods and other moorland features.

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.

A measured cross country 10 km at Priory Park, Reigate on 17 May 2026, organised by MCC Promotions. Facilities include water stations, first aid, bag drop and trophies, and the event supports the charity Sport In Mind.

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