Trail Running calendar near Tongwynlais 2025-2026

We have found 235 Trailruns within 80 miles of Tongwynlais. See below where and when you can find the races.

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 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 categorized as an AS race and is known for its steep climbs and exhilarating descents. Th..

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 Broadway Marathon is a challenging running event set in the picturesque northern Cotswolds, known for its hilly and muddy terrain. Licensed by the TRA and adhering to UK Athletics rules, the marathon is open to participants aged 18 and older. The event promises stunning scenery, making it a uniq..

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Dark Valley, Night Trails is an exhilarating night-time running event hosted by BigFeat Events at Moors Valley Country Park. Participants can choose from 10km, 20km, or 30km looped trails, all set amidst the enchanting woods of Dorset. Runners will navigate the course using headtorches, guided by fl..

DirtRun In The Dark is an exciting 10km off-road running event set in the scenic Wyre Forest at the Callow Hill Visitor Centre. Participants will navigate a two-lap course through tracks and trails under the cover of darkness, making headlamps or torches a mandatory requirement. Open to runners aged..

December 2025

The East Devon 8 Trigs event offers participants a choice of three distances: a Half Marathon (3 Trigs), a Marathon (6 Trigs), and an Ultra (8 Trigs). Set in the scenic trails of East Devon, this self-navigation event encourages runners and walkers to explore the area while visiting various trig poi..

The East Devon 8 Trigs event offers participants a choice of three challenging distances: a Half Marathon (3 Trigs), a Marathon (6 Trigs), and an Ultra (8 Trigs). Set in the scenic trails of East Devon, this self-navigation event encourages runners and walkers to explore the area while visiting vari..

The Secret Santa Tinsel Half Marathon, along with the Tinsel Twelve 12k and Turkey Ten miles, is a festive running event taking place in the scenic Black Mountains. Participants can enjoy beautiful trails while embracing the holiday spirit by dressing up and bringing a small wrapped gift for a Secre..

The Cardington Cracker is a popular fell running event organized by Telford Athletic Club, taking place in Cardington, Shropshire. The race covers a distance of 14.5 km with a total ascent of 793 meters, making it a challenging course, especially in December's conditions. Participants must pre-regis..

The Winter Celtic Trail Races, taking place in December 2025, offer a thrilling trail running experience across three distances: a 50k ultra, a full marathon, and a half marathon. Set in the stunning landscapes of Afan Forest and the Rhigos mountain range, participants will navigate ancient Celtic t..

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 "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 Hereford Couriers Christmas 10K Road Race is an annual event that invites runners of all abilities to participate in a festive road race through the scenic country lanes of Breinton, Herefordshire. Scheduled for December 28, 2025, this popular race features a mildly undulating course, fully mark..

The Plain Crazy Winter 12.5 Mile run is a challenging event set in scenic and potentially snowy conditions, taking place on December 28, 2025. Participants can expect a hilly course that tests their endurance, with a 3.5-hour cut-off time. The event supports The Royal British Legion Poppy Appeal and..

January 2026

The Walter Raleigh Round Half Marathon is a scenic running event that takes place in Budleigh Salterton, celebrating the birthplace of Sir Walter Raleigh. Participants can choose between a half marathon (13.6 miles) and a third marathon (8.5 miles), with the latter avoiding the steepest hill and coa..

Haldon Night is an exciting running event featuring 10K and 5K courses set in the scenic Haldon Forest Park. Participants can enjoy well-marked routes with professional RFID chip timing and support from trained marshals. The event also includes two children's races: a 1K for ages 3-8 and a 2K for ag..

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 an ideal choice for both experienced runners and newcomers...

The Pagan Midwinter Marathon is an exciting running event set in the picturesque Chagford, located in the north-eastern corner of Dartmoor, known for its rich pagan history. Scheduled for January 24, 2026, the event features two challenging distances: a marathon of over 28 miles and a half marathon..

Pagan Trails is a challenging running event set in the picturesque Dartmoor region, specifically in Chagford. Participants can choose between two distances: a Marathon of over 28 miles and a Half Marathon exceeding 14 miles, both featuring significant elevation gains. The routes take runners past an..