Trail Running calendar near Nantgarw 2025-2026

We have found 228 Trailruns within 80 miles of Nantgarw. See below where and when you can find the races.

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

The Bristol MoRun is a vibrant running event held at Ashton Court Park, Long Ashton, featuring 1.5k, 5k, and 10k distances. The course combines paths and trails with hilly sections between 1km and 3km, suitable for dog walkers and off-road buggies but not wheelchairs. The 5k is a single lap, while t..

DirtRun In The Dark is an off-road running event held at The Wyre Forest, Callow Hill Visitor Centre. Participants tackle a 10km course consisting of two laps around forest tracks and trails, all run in the dark, making torches compulsory. The race welcomes runners aged 14 and above and allows canic..

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, including hills, technical downhill forestry trails, and minimal road sections, aiming to complete as many loop..

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, de..

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 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 recognized as one of the toughest races in Shropshire. The course features steep climbs a..

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 & Half Marathon, organized by Cotswold Trail Events, takes place in Broadway, Worcestershire, within the scenic northern Cotswolds. The event features two distances: a full marathon and a half marathon. The course is predominantly trail and unpaved track, with some minor road s..

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The Drogo 10 is a challenging 10-mile fell race held at Castle Drogo in Drewsteignton, near Exeter, Devon. The course features hilly, muddy cross-country terrain with 1760 feet of climbing, including the notorious Hunter's Path hill. Runners enjoy stunning views of the Teign Valley while navigating..

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..

DirtRun In The Dark is an off-road running event held at The Wyre Forest, Callow Hill Visitor Centre. Participants tackle a 10km course consisting of two laps around forest tracks and trails, all run in the dark, making torches compulsory. The race welcomes runners aged 14 and above and allows canic..

The Medal Mix Challenge - Day 1 is a 7-hour timed running and walking event taking place near Capel Lane, Littleham, Exmouth on November 29, 2025. Participants of all abilities are welcome to complete as many 5.3 km laps as possible on a scenic, undulating, and accurately measured tarmac course alon..

The Medal Mix Challenge Day 2 is a 7-hour timed running and walking event taking place near Capel Lane, Littleham, Exmouth on November 30, 2025. Participants complete laps of a scenic 5.3 km out-and-back course along an old disused train line, fully paved and accurately measured as a road race. The..

December 2025

The Secret Santa Series is a festive trail running event held in the Brecon Beacons National Park, starting and finishing at Cwmdu Village Hall, Powys. It offers three challenging distances: 14 km, 10 miles, and a half marathon, with significant elevation gains up to 4,013 feet. The routes traverse..

The Secret Santa Tinsel Half Marathon is part of a festive running series held in the scenic Black Mountains near Crickhowell, Powys, starting from Cwmdu Village Hall. The event features three challenging distances: the Figgy Pudding 14km, Turkey Ten Mile, and the Half Marathon du Mulled Wine. All r..

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 Celtic Trail Races, held annually at Dare Valley Country Park in Aberdare, South Wales, offer a festive trail running experience with three distances: a 34-mile ultra, a 26-mile marathon, and a 13-mile half marathon. The courses traverse rugged, ancient Celtic tracks through Afan Forest and the..

The Nightmare Before Xmas Trail ½ Marathon is a challenging trail running event held at the Bridgend Miniature Railway Centre in Bridgend, UK. Participants face a tough course starting with the "Hateful Eight," an 8-mile route featuring mixed terrain including a steep hill, scenic road sections, and..