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 2156 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 beginner friendly off road 10 km along the River Wye from Ross on Wye with nearby facilities, parking and a bespoke finisher medal; postponed until 4 October 2026.

Lap-based timed run at Tilgate Park, Crawley offering distances from 5 km to ultra with flexible start times and a seven hour limit on a compact off-road trail.

Marathon and Half Marathon on 4 October 2026 following the way-marked Newcastle Way through Tollymore, Castlewellan and Murlough to Newcastle beach.

Headtorch trail around Swinsty and Fewston Reservoirs with half marathon, 10 km and 5 km options, on-course water and finisher medals.

The Darlington Trail Night Run will take place in Darlington on Wednesday 7 October 2026.

The Phoenix Running - Slough will take place in Slough on Thursday 8 October 2026. You can run 5 miles.

A six hour multi-lap off road event at Sence Valley Forest Park where participants complete 3.3 mile laps at their own pace, with canicross allowed and options for a medal or tree token.

An evening 10k trail in the enclosed Kiplin Hall estate combining gardens, woodland and lakeside paths, with refreshments, trophies and limited on-site parking.

A six-hour timed trail event in Cuerden Valley featuring 5 km laps, half and full marathon options, on-course aid, medals, and a donation to the park.

A lap based Friday timed run on the Thames towpath offering distances from a single 3.28 mile lap up to ultra distances, with the ten pound charity entry supporting Rays of Sunshine and a special double sided medal.

Autumn Challenge Day 1 on 10 October 2026 near Exmouth features 5.3 km tarmac laps on an accurately measured road course with a flexible start under an 8 hour timed format.

A fell race at Wasdale Head on 10 October 2026 that climbs to Kirk Fell over 2.4 miles with about 700 m ascent. Age groups run from Under 12 to Seniors and specific waterproof kit is compulsory.

A 57 miles ultramarathon from Glasgow to Edinburgh along canals and towpaths, with GPS tracking, mandatory kit requirements and a 16 hour cut off. The event has 750 places and is scheduled for October 2026 and October 2027.

Looped trail event near Maidstone offering 50 km, 25 km and 10 km options. The route follows the North Downs Way and River Medway and includes covered rest stops, GPS tracking and camping at basecamp.

Multi-distance running in Stirling on 10 October 2026, featuring 70 km and 50 km ultras, a flat 10 km out and back, and a traffic free 1 mile for young runners.

A backyard ultra at Turvey House where runners complete a 4.167 mile (6.7 km) loop each hour; failing to start a loop on the hour means elimination. Entries include solo, paired teams alternating loops, and an 8 hour day cap.

The The South Hams Ultra will take place in Kingsbridge on Saturday 10 October 2026. You can run between 26 and 100 miles.

Flat, fast trail runs on the Suffolk coast near Dunwich with 10K, half, marathon and ultra distances as part of the Endurancelife season leaderboard.

An inflatable obstacle course event in Cheltenham on 10 October 2026 offering 2.5k to 15k distances, on course music, a finisher's medal and family friendly entry rules.

A 32 mile trail through the Cambrian Mountains from Camp Plas near Dolanog, capped at 100 runners and fully marked with checkpoints and a 14 hour cut off. The weekend includes on-site camping, catering, live music and lakeside activities.

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