Trail Running calendar near Swansea 2025-2026

We have found 169 Trailruns within 80 miles of Swansea. See below where and when you can find the races.

The Giddy Horse Backyard event is a unique running experience taking place at Chepstow Racecourse in Piercefield Park. Scheduled for October 25, 2025, it features various race formats including 8-hour, 12-hour, 24-hour, and relay options, all set on a scenic 4.167-mile loop that combines woodland, p..

The Giddy Horse Half Marathon, Trail, & Steeplechase Obstacle Course Races is an exciting running event taking place on October 26, 2025, at Chepstow Racecourse in the UK. Participants can choose from various race options, including a half marathon, 8-mile and 4-mile trail races, and steeplechase ob..

The Black Beacon Mountain Races, held in South Wales' Black Mountains and Brecon Beacons National Parks, offer four challenging trail running events: a 100-mile ultramarathon, a 50-mile ultramarathon, a 50km Ultra Bach, and a 21-mile trail race. The courses feature spectacular mountain scenery, incl..

The Black Beacon Mountain Trail Races are a series of challenging, linear long-distance trail runs held in South Wales, crossing the Brecon Beacons (Bannau Brycheiniog) and Black Mountains National Parks. Starting in Hay on Wye, the event offers four race distances: 100 miles (+7500m ascent), 50 mil..

UTMB Index
November 2025

The Haldon Halloween Twilight Run takes place in Haldon Forest near Exeter, Great Britain, offering a festive running experience on November 1, 2025. Participants can choose from three distances: a 2.5 km fun run, 5 km, and 10 km races, including Canicross options for dog runners. The event features..

The OTT Ultra Marathon is a challenging 30-mile trail race set in the scenic Brecon Beacons, South Wales. Starting in Merthyr Tydfil, the course follows the Taff Trail and riverside paths before ascending to Pen y Fan, the highest peak in South Wales at 886 meters. Runners then descend via Jacobs La..

The Beacons Ultra is a challenging trail running event held in November in Talybont-on-Usk, Powys, at the foothills of the Brecon Beacons, Wales. It features three race distances: a 49-mile ultra consisting of two loops plus an out-and-back to Pen y Fan, a 26-mile marathon following a single loop of..

Endurancelife Gower offers a series of trail running events including 10K, half marathon, marathon, and ultra distances set in the stunning Gower Peninsula, the UK's first designated Area of Outstanding Natural Beauty. The courses traverse diverse and challenging terrain such as cliff tops, woodland..

UTMB Index

The Salt Settlers Six Hour Race is a timed endurance event held in the Lower Otter Valley near Budleigh Salterton. Participants complete as many 4.4km loops as possible within six hours on a mostly flat course with a slight 12m ascent per loop. The race accommodates runners and walkers, offering sol..

The East Devon 8 Trigs is a self-navigation trail running and walking event held at Budleigh Salterton Cricket Club in Devon. Scheduled for November 8, 2025, it offers three distance options: a 3 Trigs Half Marathon (21km), a 6 Trigs Marathon (42km), and an 8 Trigs Ultramarathon (53km). Participants..

The Bristol MoRun is a vibrant running event held at Ashton Court Park, offering 1.5k, 5k, and 10k distances to suit all ages and abilities. The course features a mix of paths and trails with some hilly sections between 1km and 3km, suitable for dog walkers and off-road buggies but not wheelchairs...

The Trails & Tarmac 12hr Backyard Ultra is a challenging endurance running event held near Crickhowell in Powys, UK, set in the scenic Black Mountains. The race features a 4.2-mile loop combining equal parts trail and tarmac, with mostly flat terrain, one gradual climb, and a short steep section, pr..

The Bath Skyline running event, organized by Relish Running Races, offers 5km and 10km off-road races around the iconic Bath Skyline, featuring woodland trails, open meadows, and hilltop views of Bath. Held at the University of Bath's West Car Park, the course is mostly flat with some gentle rises,..

The Burrator Noir is a night running event held at the Discovery Centre, Burrator Reservoir. It features a challenging 12-mile trail run through moorland, plantations, rocky paths, and disused railway lines, as well as a flat, fast 10k road race around the reservoir's perimeter. The trail course inc..

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..

Dusk Till Dawn The Winter Edition is a challenging 12-hour running event held at Bridgend Miniature Railway in South Wales. Participants tackle three distinct 10-mile mixed terrain routes, aiming to complete as many loops as possible from dusk until dawn. The course features varied terrain including..

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 Drogo 10 is a challenging 10-mile (16 km) fell race held annually at Castle Drogo near Exeter, Devon. The multi-terrain course features approximately 1,760 feet (535 meters) of climb, offering runners stunning views of the Teign Valley. The route includes steep descents, woodland paths, river cr..

The Smurf Run in Aberdare, Wales, is a unique 7-hour time challenge event hosted by Saturn Running at the scenic Dare Valley Country Park. Participants can choose their distance, starting from a minimum of 3km, with laps of approximately 7km (4.37 miles) on well-maintained footpaths offering beautif..

The Combe Crawler is a challenging 8.5-mile (13.6 km) cross-country race held annually in Ilfracombe, North Devon. Known for its hilly terrain, the course features steep coastal paths and stunning countryside views, making it a true test of endurance for runners of all abilities. The race typically..