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 2297 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.

Trail runs of 2 km, 5 km and 10 km take place along the Coln River valley near Coln St Aldwyns on 6 September 2026. Routes are mostly on trail and proceeds support Hatherop Primary School's Big Build Project.

A single hill fell race over a classic horseshoe route to Waun Fach covering 11.2 km and 610 m ascent, based at Dinas Castle Inn with marshals, first aid cover and a maprun variant for solo or paired efforts.

A 14.5 km fell race near Penmaenmawr featuring 855 m of climb across upland moorland. The partially marked route requires competent navigation and mountain skills; entries include a post‑race soup or roll and electronic timing.

An inaugural off road half marathon through Donyland Woods, Friday Woods and nearby countryside on Sunday 6th September. Entries were handled online and the event is listed as sold out with 26 entrants.

A small community trail race in Epney, Gloucestershire covering about 10 miles with roughly 70 m of ascent. The circular course follows canal towpath and local footpaths and features marshals, an aid station and a GPX file for guidance.

Coastal running from Exeter to Babbacombe Downs with 50k, marathon and half marathon options; cupless format, marked coast path, cut-offs, and a bespoke medal plus a warm pasty at the finish.

A 10K trail through the historic grounds of Loseley Park on September 6th 2026, featuring private estate running, accurate timed results, official photography and bespoke finisher medals.

A measured, mostly off road 10 km on the Flitch Way with chip timing, kilometre markers and finisher T shirt and medal. The event raises funds for the Village Hall and includes a one mile family fun run.

A six-day, 380 km mountain ultra across Wales with 16,400 m ascent, running from Conwy Castle to Cardiff Castle. Multiple shorter options are available and the route requires map navigation, mandatory kit and issued GPS tracking.

Enjoy a Peak District fell race at Oxspring Playing Field, a punchy 6.2 km course with 190 m of ascent through scenic terrain. On the day entries welcome for a modest fee and the event is part of an eight race series.

Guided 10 km trail run at Silent Pool near Guildford using parts of the North Downs Way and Netley Heath, with dusk and night options, group pacing, kit support and the chance to trial headtorches and trail shoes.

A mostly off road 10 km trail run at Trifarm on 09 Sep 2026, the second race in a four event series. The clockwise loop uses public footpaths and bridleways and includes on site parking, a finish water tap and championship points.

A three-evening summer 5K series around Leith Links, Fettes and Inverleith Park in Edinburgh. Events are chip timed, feature prizes and optional finisher medals, with entries priced at £12 per race or £30 for all three.

A three-race autumn trail series featuring a 5k course around Clowbridge Reservoir near Burnley. The route is two laps of a trail path, open to ages 11 and over, with a published entry fee of £6.50.

A timed, lap-based Friday run along the Thames with flexible rock up and run starts; the £10 affiliated entry is donated to Rays of Sunshine and participants receive a double-sided charity medal.

A team endurance event covering 100km along the South Downs Way in under 30 hours, with standard teams of four plus support crew and a new relay option for 2026. Teams raise funds for the Gurkha Welfare Trust.

A **100 mile** ultra on runnable trails through Sherwood Forest and towpaths, with two forest loops, well stocked aid stations, a 30 hour cutoff, drop bag points and pacers allowed from about mile 51.

A multi-duration trail event at Tehidy Woods on 12 September 2026, using a marked 4 mile loop. Runners choose from 3, 6, 9 or 12 hour formats and compete on a hilly, technical woodland course.

A guided mountain run across the 15 Welsh 3000s in Snowdonia, including the Carneddau Glyderau and Snowdon ranges and the Crib Goch traverse. About 30 miles with 4000 m of ascent and a minimum age of 18.

A beginner friendly 50 km ultramarathon along Norfolk's Boudicca Way from Diss to Norwich, open to runners and walkers with a 10 hour cutoff. The field is limited to 250 and entries include checkpoints, GPS tracking and a post race meal.

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