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 2240 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 60 km mountain ultra at Mar Lodge in the Cairngorms National Park on 13 June 2026 with 1006 m ascent. A 48 km short course option is available and entries are limited.

An eight hour timed challenge on a 5.3 km out and back route along an old disused train line near Bridestowe. Turn up within a morning to early-afternoon window and complete as many laps as allowed to earn a medal.

Manchester Backyard Ultra at Giants Seat Scout Camp is a timed-loop endurance event on 13 June 2026. Runners repeat a roughly 6.7 km loop each hour until one runner remains; a torch is required for night laps.

A mud obstacle race in Walton, Brampton with adult and junior distances across mixed terrain. The course features cargo nets, monkey bars, tunnels and a long slip and slide plus event photography and a post race festival.

Trail running at Wilkswood Farm, Swanage, with three measured coastal routes (23 km, 13 km, 7 km), technical rocky sections and varied outpost support. Dog entries are sold out.

A timed, multi-lap event at Chorlton Water Park using a 5.3 km out and back course along the River Mersey. Runners can cover one lap up to an ultra within a seven hour limit and all participants receive a finishers' medal.

Run the 9.5 km Wincle Trout fell race in the Peak District, featuring a 320 m climb and a river crossing. The event is part of the lively Wincle Village Fete. A shorter 3 km junior race is also available.

An inflatable obstacle event in Brighton on Saturday 13 June 2026 offering 2.5k, 5k, 10k and 15k options with large inflatables, multiple music zones, on-course water and a finisher medal for all participants.

A timed, multi-leg ultra from Kielder Castle where solo runners or Ekiden teams cover five radial routes totalling 170 miles within 36 hours, with the North leg to Carter Bar required as the finale and self navigation required.

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 loop challenge in Inverlael Forest near Ullapool where runners and walkers complete repeated 3.6 km laps as individuals or in teams. The event raises funds for Highland Hospice and awards medals to all participants.

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.

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