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 2178 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.

Spooky Challenge Day 1 on 31 October 2026 in Bridestowe is an 8 hour timed off road and paved event on an out and back route along an old train line. Laps are 5.3 km, entries limited and minimum age is 18.

A *10 km* trail race from Auchterarder into the Ochil Hills with forest trails, stream crossings and a route shaped like a chilli pepper. Online entry, 16+ age limit, goody bag with snood and medal, prizes for finishers and costumes.

Celebrate Halloween with a historic fell race starting at the Summit Inn in Littleborough. This 4.3 mile event features 800 feet of ascent and includes categories for all ages from juniors to seniors.

Trail races around Roadford Lake organised by Sportiva Events. Distances include 10K and half marathon with canicross options. Entries include chip timing, feed station, medal, refreshments and category prizes.

A single-loop 50K trail race on 31 October 2026 starting and finishing in Berkhamsted. Fully marked route with three aid stations, about 800 m of ascent, a nine hour time limit and a 350 runner field.

Trail Outlaws stages Dark Skies Run @ Wooler in Northumberland with fully marked trails, stocked check points and options for a Trail 10k or a Half Marathon. Entry fees shown range from £25 to £36.

Tackle the Monsal Mash in the Peak District, a challenging 9.5 km fell race with 500 m of climb over technical and fast rough terrain. Advance entry and full kit required, teams of three welcome.

Trail races from Jenkins Field, Glenridding offer 5k, 10k and 15k courses on marked, marshalled trails with scenic fell views, event village facilities and on site medical cover.

A six hour timed trail at Linacre Reservoirs where runners complete repeated 5 km laps and aim for as many laps as possible. Checkpoints offer food and drinks and every finisher receives a medal.

Experience a festive 6.66 km Halloween trail run starting and finishing at a local brewery in Chelmsford. Participants enjoy a costume focused event with medals and drinks for finishers in a social atmosphere.

A 32 km, 1800 m ascent mountain event at Pen y Fan featuring three separate ascents via six different paths, with Classic and 16 kg weighted categories. Navigation is required and control marshals monitor checkpoints.

A night gravel trail run in Alice Holt Forest with 5 km laps and three distance options, head torch navigation, on-course outposts and on-site parking and facilities.

A scenic trail half marathon around Dalmeny Estate and Cammo Nature Reserve near South Queensferry. The chip timed 13.1 mile course has under 1000 ft of ascent and includes a finisher medal, prizes and on site facilities.

Join this flexible charity run along the River Mersey in Manchester. Complete as many 5.3km laps as you like in seven hours on a flat riverside course to support Save The Rhino.

A volunteer run full and half marathon around Gargrave with multi terrain loops, refreshment stations and a sustainable finisher medal. Proceeds support a participant attending the World Scout Jamboree in Gdansk 2027.

Night trail races at Delamere Forest with 10k, half marathon and a free 1k kids event. The course is marked with reflective signs, entries include a glow in the dark medal, drinks, timing and free high resolution photos.

Winter Sugar Loaf is a 9.6 km fell race near Abergavenny on 31 October 2026 with 485 m of ascent; entry via Fabian4 costs £9. The route is partially marked, full WFRA kit is mandatory and limited parking is available.

An evening Halloween run at Hogmoor with kids and adult loop options, varied sandy and muddy terrain, fancy dress encouraged, free parking and medals for finishers.

A waymarked lakeside event around Ullswater offering a *20 mile* low level route or a *24 mile* Challenge with higher fell sections, staffed checkpoints and a written route description for participants.

A timed, lap-based run along the Itchen Way in Winchester with 2.62 mile loops, a seven hour limit, flexible start times, an aid station with vegan options, and a bespoke finisher's medal.

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