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 1622 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.

Race The Light is a scenic trail run along the Erme Estuary at Mothecombe featuring tidal estuary crossings and coastal trails. Choose the 8.5 mile Classic or Half Marathon, head torch required, and finish with a bespoke medal.

Join the Crag Fell Handicap on 6 Dec 2025 in Ennerdale for a short but brutal 4 km race with 410 m of climb across classic Lake District terrain. Pre entry required and runners bring a prize to swap at registration.

Take on the Jurassic Coast from Swanage on 6 Dec 2025 with distances from a coastal 10K to a full marathon or ultra. Rugged trails, big climbs and fully marked timed courses promise a scenic and satisfying challenge.

UTMB Index

The Fordh Sen Mighal will take place in St Ives on Saturday 6 December 2025. You can run 11 miles.

Take on a tough winter ultra through the wild Cheviot hills on a roughly 55 mile loop that challenges experienced runners with changeable conditions and a 24 hour cutoff. All finishers receive a GPS tracker, t shirt and medal.

Serious Santa trail races serve up rugged, scenic runs in the Black Mountains from Cwmdu Village Hall with Half Marathon, Ten Mile and 14 km options. Expect technical trails, festive vibes and handmade finisher trophies.

Join the Cannock Chase Forest Christmas trail runs on 6 December for 5k, 10k and a junior run through undulating forest trails. Wear seasonal fancy dress for a chance to win best dressed, and enjoy a bespoke medal, free photos and prizes.

The Alyn Waters Winter Trails offer 5k and 10k fully marked and marshalled trail running courses set in the scenic Alyn Waters country park. Designed for all abilities, the event encourages participants to race or enjoy a leisurely run with..

Take on the scenic Carsington Water Half Marathon or 10K on Saturday 6 December 2025, running undulating reservoir trails with marked kilometres. Enjoy chip timing, a finisher medal, post race goodies and a lively event village.

Celebrate Christmas with the Siblyback Santa Scamper at Siblyback Lake, a family friendly run with 2.5, 4.8 and 9.6 km routes welcoming dogs and giving medals to all. Enjoy free race photos and Olive & Co café as the PGE trail finale.

Embrace festive trails in the Brecon Beacons with the Secret Santa Festive Trail, a scenic but challenging run across the Black Mountains. Multiple distances, checkpoints with vegan options and a canicross welcome for dogs on leads.

Telford T50 Trail Run is a winter 50 miles route through Ironbridge, the Wrekin and industrial heritage sites, with four checkpoints serving food and cake. Tackle rugged trails and claim the organiser's biggest ever finisher medal.

Join a magical evening run through parkland past the illuminated Cowdray Ruins at the Cowdray Winter Night Run. Head torches are mandatory and there are 5 km and 10 km distances plus dog friendly canicross and kids races.

Take on Rudolph's Romp, a scenic 25 mile route across the Yorkshire Wolds with sweeping views of the Vale of York and the Humber. Organised by LDWA East Yorkshire on 6 December 2025.

Take on the Salisbury Plain Winter Edition on 6 December for a scenic, fully marked trail challenge over Half or Marathon distances. Enjoy well stocked aid stations, marshals and finisher medals as you tackle crisp winter terrain.

Join the Otterton Reindeer Run for a festive 3 km fun run or a scenic 10 km multi terrain route through Otter Valley. A village event that raises funds for local projects with fancy dress prizes and post race treats.

Explore the New Forest with Wessex Orienteering from Bolderwood Car Park, tackling technical woodland courses from a challenging Blue to a 60 minute Score challenge. Entry and parking are limited so book early and car share if you can.

Experience a magical night trail run through the atmospheric Cowdray Estate, passing the iconic ruins under the stars. Choose kids and adult distances from 3 km to 10 km for a fun evening in the Run the Seasons Winter series.

Take on a hilly 10 km trail through scenic Tollymore Forest Park at the NIMRA Run For Rescue on 6 Dec 2025. Support Mourne Mountain Rescue with a voluntary donation while enjoying a marked and marshalled course.

Take on the Really Wild Boar fell race on Sat 6 Dec 2025 in the York Dales, a 9 km challenge with 450 m of climb through classic fell terrain. On the day entry is £10 and includes soup and a roll. Register at the Fat Lamb Country Inn.