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 1437 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.

The Slate Trail Ultra, organized by APEX Running, is an exhilarating ultra-running event set in the stunning landscapes of Snowdonia, Wales. Participants can choose between two challenging routes: the 145km (90 miles) Slate Trail Ultra and the 88km (55 miles) Ultra Tour of the Quarries. The event fe..

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The Punk Panther Wharfedale Skyline is a trail running event featuring stunning routes around the picturesque Wharfedale area. Designed by Punk Panther, this event caters to runners of all levels, whether they are beginners or seasoned athletes looking to improve their speed. Participants can choose..

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The Lobster Lollop is a family-friendly trail running event supporting the National Lobster Hatchery in Padstow. Taking place on November 15, 2025, it offers various distances including 2.5k, 5k, 10k, and 10 miles, with additional Canicross categories for some distances. The event features a no-pres..

The Litton Birks Fell Race is a challenging 5km race set in the picturesque Littondale and Upper Wharfedale within the Yorkshire Dales National Park. The event features a significant ascent of approximately 362 meters, making it a true test of endurance for participants. Scheduled for November 15, 2..

The Burrator Noir is a unique running event featuring a 12-mile night trail run and a 10k road race, set at the picturesque Discovery Centre at Burrator Reservoir. Participants will navigate a diverse trail that includes moorland, rocky paths, and disused railway lines, offering a challenging yet en..

The Margam Trail Races, organized by Trail Revolution, will take place in Margam Park on November 15, 2025. This event features a variety of race distances, including 5km, 10km, and a half marathon, designed to challenge participants on the park's scenic forest paths and woodland trails. The course..

The Bath Skyline event features a fun and challenging 10km off-road running series set against the stunning backdrop of the Bath Skyline. Participants can choose between day and night races, with routes that include a mix of solid stone paths, woodland trails, and open meadows, offering breathtaking..

The Liverpool Half Marathon Morun is a charity running event held in Croxteth Park, supporting Movember’s men’s health initiatives. Participants can choose from a 1.5k Mini MoRun, 5k, 10k, or the full half marathon, all featuring chip-timed races with instant results. The event promotes fun, fitness..

The Hamsterley Moon Runner is a unique 10k head torch trail race set in the picturesque Hamsterley Forest, known for its diverse terrain and wildlife. Scheduled for November 15, 2025, this event offers a fully marked course suitable for both novice and experienced runners. Participants will experien..

The Trails & Tarmac 12hr Backyard Ultra is an exciting endurance running event set in the scenic Black Mountains near Crickhowell, Powys. Participants will tackle a 4.2-mile loop, completing as many laps as possible within a 12-hour timeframe. The first 11 laps must be finished within an hour each,..

Dusk Till Dawn The Winter Edition is an exciting running event organized by Mad Running Junkies, set in the scenic Bridgend, South Wales. Participants will tackle three 10-mile routes over a challenging 12-hour period, starting at dusk and finishing at dawn. This event is designed for those looking..

The Wendover Woods 50® is a challenging 50-mile trail race held within Wendover Woods, featuring five loops of 10 miles each on forest trails. The course includes a mix of runnable sections, smooth descents, and steep climbs, totaling 10,000 feet of elevation gain and descent. The event is supported..

Gods Own Backyard Ultra Fall 2025 is an endurance running event taking place at Hunters Greave, Leeds. Participants will tackle a 4.167-mile loop, starting on the hour every hour. To continue, runners must complete the loop within the hour; failure to do so results in a DNF (Did Not Finish).The even..

The Tweed Valley Ultra is a multi-terrain running event set in the picturesque Tweed Valley, offering two challenging distances of 50km and 65km. Scheduled for November 16, 2025, the race starts and finishes at the Glentress Peel Visitor Centre, providing participants with stunning views and varied..

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The Cardiff Trail Half Marathon is an exciting running event set against the stunning backdrop of Castell Coch. Scheduled for November 16, 2025, this newly introduced race offers a unique blend of competition and scenic beauty, making it an ideal experience for both seasoned athletes and newcomers...

The Slaley Hall & Forest Half Marathon and 10K, scheduled for November 16, 2025, is a scenic trail running event set in the picturesque surroundings of Slaley Hall near Hexham. The course features a half marathon route of 13.1 miles through the tranquil Slaley Forest and a 10K lap around the estate..

The 5th Sundon Saunter is a walking and running event held in Barton-le-Clay, UK, on November 16, 2025. Participants can choose from three distances: 13 miles (walkers only), 18 miles, and 27 miles, passing through undulating countryside, woods, fields, tracks, and some roads, offering scenic views..

Roly's Run 2025 is a trail running event held in the Meon Valley, Hampshire, in memory of ultra-runner Rich Walklate, known as Roly. The event offers three distance options: 15, 20, and 40 miles, with courses featuring scenic loops around the South Downs Way and surrounding areas. Participants can e..

The Manchester Half Marathon Morun is a popular running event held at Heaton Park, featuring various race distances including a half marathon, 10k, 5k, and a mini 1.5k run for kids. Organized by MoRunning to support Movember, the event aims to raise awareness and funds for men's health issues such a..

The Callow Fell Race, organized by Mercia Fell Runners, is a challenging event that has transitioned from a summer to a winter series race. Covering a distance of 8.1 km with a total ascent of 762 meters, it is recognized as one of the toughest races in Shropshire. The course features steep climbs a..