Trail Running Calendar United Kingdom 2025-2026

Welcome to the most comprehensive guide to trail races in the UK for 2025-2026! Our curated list features an impressive 1361 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.

Run Petzl Night Runner Rivington on Winter Hill at night, the series finale with reflective course signs and radio mast views. Pick 10k or half on rough off road terrain, earn a glow in the dark medal and bring kids for a free 1k.

Join the OMG Run at Bawsey Country Park on 24 Jan 2026 for timed trail distances from 5k to ultra in a six hour format with extra lap options. Limited to 100 runners, the undulating sand and gravel course offers lap aid and finisher medals.

Saturn Running's "Spice Up Your Run - Wales" is a fun and inclusive running event held at Dare Valley Country Park in Aberdare. Participants can walk or run a minimum of 3km, with options to complete laps of approximately 7km each, allowing..

Tackle a wet and hilly trail at Bagshot on Saturday 24 January 2026, with splashy puddles and twisting climbs to test you. Choose a single lap 5 km or two lap 10 km for a muddy, adventurous winter race.

Tackle a midwinter multi terrain 10k or 16k in Leeds from the Kirkstall Bridge Inn. Enjoy a single lap of scenic canal and riverside trails with about 200 m of climb for a challenging and rewarding winter run.

Tackle Lakeland terrain at the Kong Winter Series BOS fell race on 24 January 2026 at Braithwaite Lodge. Part of Kong Running's 10th winter series running in reverse, expect tough climbs and a friendly atmosphere.

Take on the epic Tour De Yr Wyddfa with 43.5 km and 2327 m ascent around the mountain on 24 January 2026, or opt for a shorter Llanberis to Pen y Pas half, relay or pair entry. Organized by Eryri Harriers for experienced mountain runners.

Endurancelife South Devon in Beesands offers stunning coastal trails and steep inland climbs through an Area of Outstanding Natural Beauty. Pick 10K, Half, Marathon or Ultra on a marked coastal course with timing and a finisher medal.

UTMB Index

Experience wintry Dartmoor on Pagan Trails, a midwinter run from Chagford that passes stone circles and ancient sites. Choose a demanding marathon of 28 miles and 1500 m ascent or a half of 14 miles and 700 m ascent and bring winter kit.

Tackle a classic Cumbrian fell at Blake Fell Race starting from The Leaps in Kirkland on Saturday 24 January 2026. The senior route is a tough 9.5 km with 429 m of ascent and junior races for a range of ages.

Run the Pagan Midwinter Marathon or Half on 24 January 2026 from Chagford across north Dartmoor, visiting stone circles and ancient pagan sites. Expect raw midwinter terrain and big climbs for a memorable off road challenge.

Run under dark skies in Kielder Forest on a 10 km night trail with 246 m of climbing, tackling short steep climbs and the zig zags of Simons Tester. Enjoy a fast finishing descent plus on the night prizes and series points.

Choose the Moors Valley Wildwood Trail Half Marathon or 10K through scenic woodland and muddy gravel trails where deer and birds of prey may appear. Chip timed, eco friendly event with aid stations and a wooden finisher medal.

Tackle scenic, eco friendly trail races through Ashdown Forest at Pippingford Park, with 10 and 5 mile options over rolling, hilly trails. Enjoy forest views, supportive volunteers, bespoke medals and cash prizes for top finishers.

Experience iconic views of Stonehenge on the Stonehenge Stomp, a friendly walking event that also welcomes runners. Choose routes from 5 km to 40 km and book online when entry opens on 1 November 2025 as places are limited.

Run a scenic, flat trail through Alexandra Gardens near Windsor Castle with 10K and half marathon options. Chip timed, marshalled and offering free photos, post race goodies and a tech tee deal.

Mix muddy trails and smooth tarmac in The Half & Half 10 km at Sowerby Bridge on 25 January 2026, with a first half of muddy trails and obstacles and a second half on road. Fully marked one way and limited to 100 runners, book early.

The That's Lyth will take place in Kendal on Sunday 25 January 2026.

Run flat scenic paths, trails and beach at Druridge Bay Beach Trail Runs on 25 January 2026 with 10K and half marathon options. Canicross friendly, chip timing and finishers receive a medal, Wild Deer merch and a snack.

The Longbridge 100 Backyard Ultra is a last-man/woman-standing race staged at Longbridge Farm Barns near Litlington in Alfriston, England. Each loop is 4.2 miles and begins on the hour, with competitors required to be inside the corral when..