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 Celtic Trail Races 2025, held in Aberdare, Wales, is a festive trail running event featuring three race options: a 50k ultra, a marathon, and a half marathon. The courses traverse scenic areas including Afan Forest, Rhigos Mountain, and the Brecon Beacons, with routes passing ancient Celtic trac..

The Punk Panther Christmas Cracker is an exciting winter running event featuring a mystery route that changes each year. Participants can choose from three distances: 12, 19, or 32 miles, with starting positions determined by their average pace in previous Punk Panther races. The event emphasizes a..

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The Mince Pi Run - Races of 2 Decimal Places is a unique running event scheduled for December 14, 2025, at Shalford Park, Guildford. Participants can choose to run distances ranging from 3.14 to 31.4 miles, with options for a Pi marathon and a 1-mile fun run for younger children. The course is mostl..

The Sherwood Pines Festive Trail Runs 2025 is a family-friendly sporting event held in the scenic Sherwood Pines woodland near Mansfield. Participants can choose from various races, including a 10km trail run suitable for those over 15, a family 1-mile fun run for children aged 3-14, and a Santa-the..

'Twas The Run Before Christmas is a festive running event held at Brandon Country Park in Suffolk, set within Thetford Forest. Participants can choose between a 6-hour or 4-hour race, completing as many laps as possible on a 5.3k multi-terrain course. This event caters to runners of all levels, from..

The Let it Stow Half Trail Marathon is a festive-themed running event set in Stowmarket, Suffolk, showcasing the beautiful Mid-Suffolk countryside. Participants will navigate a well-marked 13.1-mile route that includes woodland, meadows, and quiet country lanes. The event emphasizes sustainability b..

Run to the Rising Sun is a new 10k trail race set in the scenic Rising Sun Country Park in North Tyneside. Participants will enjoy an early morning start designed to coincide with the sunrise, providing a stunning backdrop for the race. The course features well-marked, traffic-free paths suitable fo..

The Silent Night Fell Race, organized by Durham Fell Runners, is a unique running event that takes place in the dark, offering a challenging 6.6 km course with a 370m ascent to the summit of Chapelfell Top in Weardale. Participants must navigate an unmarked route on rough, pathless terrain, requirin..

The Christmas Canter is a festive running event held at the Suffolk Running Centre in Bury St Edmunds. Participants can choose from various distances, including 5k, 10k, half marathon, full marathon, and ultra, with a seven-hour cut-off time. The course features an out-and-back route for shorter dis..

The NAV4 Tour de Helvellyn is a challenging winter ultra marathon held annually around Helvellyn, starting and ending in Askham. Covering approximately 38 miles with around 2,000 meters of ascent, the route mainly follows mountain trails and bridleways, requiring advanced navigational skills and sel..

The Christmas Pudding Dash is a festive multi-terrain running event held in Pett, near Hastings, celebrating its 20th year. Participants can choose from a 5-mile race, a 2-mile fun run, and a children's scurry, making it a family-friendly occasion. The course features undulating, muddy trails throug..

The Moel Famau Festive 'Piece of String' Race is a unique running event held on the last Saturday before Christmas at Bwlch Penbarras. Participants can expect a surprise distance and route, ranging between 6 and 12 kilometers, which will be revealed as the race progresses. The event includes a Canic..

The Nightmare Before Xmas Trail ½ Marathon is a challenging running event set to take place at the Bridgend Miniature Railway Centre. Participants will tackle a mixed terrain course that includes an 8-mile section known as The Hateful Eight, followed by an additional 5 miles filled with obstacles li..

The Winter Wanderlust 50km is an exhilarating ultra-trail race set against the stunning winter landscape of Kent. Participants will embark on a scenic journey from Detling to Wye, traversing the North Downs Way, with a mix of challenging climbs and breathtaking views. The event features well-stocked..

The Winter Solstice Strider is a unique running event taking place at St. Ives Estate in Bingley on the shortest day of the year. Participants can choose to run either 5 or 10 kilometers, with options for both runners and walkers.The event is chip-timed, and all finishers receive a bespoke Solstice..

The Elves 11ish Trail is a unique narrative trail race taking place on December 21, 2025, starting and finishing at the Blackwater Leisure Centre. Participants will navigate a circular route of 11 miles, primarily off-road, using written instructions instead of traditional markers. A well-stocked ch..

The "Slow and Dirty" is a unique 19k trail race that takes place along a historic railway line in Dorset and Somerset. Originally known for its slow trains making frequent stops, the route has been transformed into a scenic path for runners, cyclists, and walkers. This family-friendly event encourag..

The Chopwell Woods Christmas Trail Races 2025 is a festive running event held in the scenic Chopwell Woods, near Gateshead. Participants can choose from various distances, including a family 1-mile Santa run, a 4-mile trail, and an 8-mile race, suitable for different age groups and fitness levels. T..

The Festive Friston Forest Night Trail Run is a unique 5-mile running event set in the scenic Friston Forest, taking place on December 22, 2025. Participants will navigate the course using Strava GPX on their devices, with a tail runner to ensure safety. The event encourages festive spirit, featurin..

The Die Hard Christmas Marathon and Half Marathon is a festive running event taking place on December 24, 2025, at Caldecotte Lake in Milton Keynes. Participants can choose between a full marathon, consisting of 7.5 scenic laps, or a half marathon with 3.5 laps. The event features a supportive atmos..