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 2254 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.

A community 5k and 10k at Neroche Primary School with chip timing and countryside multi-terrain routes. Proceeds support the Neroche School PFA and a children’s fun run is held for a small donation.

A timed multi-lap event on a flat 5.3 km out and back towpath course along the Thames offering distances from 5 km up to ultra with flexible start times, themed ducky incentives and a large spinning medal for finishers.

A 24 mile fell run and challenge walk through Swaledale on 13 June 2026, organised by Swaledale Outdoor Club. Competitors must navigate the route themselves and finish within 10 hours; minimum age 14.

A day of mountain races around Kirkby Stephen in East Cumbria offering 65 km, 26 mile, 20k and 11.2 km routes. GPS tracking, feed stations and a Basecamp with music and camping support the event.

A Category AL hill race on the Isle of Arran covering 20 km with 1670 m of ascent. The mostly unmarked route requires navigation skills, checkpoints and mandatory kit, and includes awards for overall, veteran and team categories.

A two-day trail running weekend in Grizedale Forest with an eight hour relay on a 7 km loop and a 22 km individual race over two 11 km laps. The event includes camping, food vendors, live timing, talks and on-site facilities.

A five hour lap challenge in Inverlael Forest near Ullapool where participants complete 3.6 km laps as individuals or teams; the event raises funds for Highland Hospice and awards medals to finishers.

A functional fitness race in London on 13/06/2026 combining ten Xercises with repeated running segments. Multiple solo, doubles and relay formats are offered and entrants must be 18 or over.

Approximately 12k mainly off road at Rother Valley Country Park with a signed course and marshals. Finishers receive a mug and goody bag and there will be tea, coffee and plenty of cakes.

A long-standing Green Events race in Llanwrtyd Wells where runners compete directly with horses over mountainous terrain, timed electronically. The event has enforced cut-offs and an escalating jackpot for any runner who beats the first hor..

A muddy 5 km obstacle course at Thornes Park with uneven grass, woodland paths and rolling hills. Waves run every 15 minutes; participants must be 13 or older and there is a minimum fundraising target of £50.

A muddy 5k obstacle event at Sandwell Valley Country Park on 13 June 2026 featuring grass, path and woodland terrain with staggered wave starts and multiple obstacles. Minimum age 13 and a minimum fundraising target applies.

A Pretty Muddy 5k obstacle course around Strathclyde Loch at Strathclyde Country Park with mud obstacles to climb, crawl and slide through. Organized by Cancer Research UK, waves run every 15 minutes and a £50 fundraising target applies.

An evening trail run at Bodenham Arboretum on 13 June 2026 offering 5 km and 10 km options; mixed-terrain routes, online-only entry with limited places, and funds raised for local charity and scout group support.

A fell race held since 1986 near Blaenavon at The Whistle Inn, Garn yr Erw. The event is Category BS with options of 8 km or 5 miles and accepts entries on the day or online.

Competitors run repeated hourly laps of 6706 metres at Breakheart Quarry until only one runner remains. The mixed trail loop has about 560 ft of ascent per lap and heads-up warnings are given before each start.

A 10.4 km hill race organised by Carnethy Hill Running Club around Traprain Law, featuring a river wade, a steep rocky ascent with rope and an extra climb via Pencraig Wood. Entry fee £7.50 and entries accepted on the day.

A ten person relay following the Barnsley boundary across roads, tracks and footpaths, covering about 72 miles and 7,350 ft of ascent. Teams run individual legs, times are aggregated and results are announced by category.

A classic fell race around Buttermere Village of just over 9 miles with over 4000 ft of ascent, featuring steep rocky climbs, ridge running and long technical descents. Team entries and designated race parking are provided.

A fell race at Steel Rigg car park in the North Pennines on 13 June 2026, featuring a 7.1 km course with 189 m climb. Entry is on the day for £5, and a 1.8 km junior race is held for 8 to 16 year olds.

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