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 1341 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.

Take on the Arundel and SDW Winter Trails 2026, a point to point off road run from Heyshott to Arundel by Arundel Castle. Choose marathon or 15 mile routes through rolling fields and riverside trails and cross a scenic suspension bridge.

Take on scenic mixed terrain trails around Vogrie Country Park and the Tyne Valley, starting and finishing by the Victorian manor house. Choose a 10 km, 5 km or 1.6 km fun run and enjoy post race snacks, a memento and café refreshments.

The Cardiff Trail 10k is an exciting running event set against the stunning backdrop of Castell Coch. Scheduled for January 18, 2026, this newly introduced race offers participants a unique blend of competition and natural beauty, making it..

Take on the Benfleet 15, a 15 mile multi terrain challenge at Hadleigh Country Park on 18 January 2026, with muddy off road trails, a sea wall stretch and Olympic mountain bike sections. Chip timing, a bespoke medal and event photos make it..

The Arc Of Attrition by UTMB will take place in Coverack from Friday 23 January 2026 to Sunday 25 January 2026. You can run between 13 and 101 miles.

UTMB Index

Take on a three hour trail challenge from Holmbury St Mary and complete as many 5 km laps as you can across scenic Surrey Hills trails and the climb to Holmbury Hill. Entry includes a bowl of chilli or curry and a headtorch is required.

Take on the Crocodile Challenge at Ryton Pools Country Park, a timed six hour loop where you run as many laps as you like around scenic pools. Canicross and rucking welcome with dogs on short leads; finishers get a medal and a portion of fe..

Join the Buchlyvie 10k, a chip timed trail along the old railway track with one rolling hill and a village finish. Limited to 300 runners, this friendly race offers jelly babies at the turn, after race refreshments, medal and goodie bag.

The Holly Challenge is a multi-distance race organized by How Hard Can It Be Events, held at Burroughs Bank, Lightmoor, Telford, TF4 3QS, within the Lightmoor Nature Reserve. Runners can choose 5K, 10K, half marathon, or marathon distances...

Join the social, self navigated Blackdown Beast, a scenic cross country run from Dunkeswell Airfield supporting Macmillan Cancer Support. Expect village hall and pub refreshment stops, stunning hills and 10 or 16 mile options.

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.

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.

Run the scenic Tissington Trail through the Derbyshire Dales on a traffic free former railway, choosing a half marathon or 10k across a relaxed two day weekend. Enjoy wide hill views, gentle gradients and a welcoming race vibe.

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..

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.

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.

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.

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

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.

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.