Trail Running calendar near Merthyr Tydfil 2025-2026

The Dalwood 3 Hills is a popular multi-terrain running event held in Dalwood, near Axminster, Devon. Returning in 2026, it offers three distances: a challenging 10-mile course featuring hills, mud, and river crossings; a 5km "Dalwood Dash" with similar terrain; and a new 3km "Dalwood Doddle" fun run..

The Dartmoor Winter Traverse is a challenging, fully supported running and walking event held on Dartmoor, UK, typically in February. Participants can choose between a 50 km ultra-distance from the southern to northern moorlands or a shorter 30 km route from Princetown to Meldon. The course traverse..

The Two Tunnels Races, taking place in February 2026, offer a unique running experience through Bath's historic underground tunnels, the longest of their kind in the UK. Participants can choose from a variety of distances, including ultra marathons, half marathons, 10km, 5km, and family-friendly Col..

The Brecon to Cardiff Classic is a 70-kilometer (43-mile) ultra running race held annually along the scenic Taff Trail from Brecon in the Brecon Beacons National Park to Nantgarw near Cardiff. Now in its 12th year, this fully marked, one-way race features diverse landscapes, starting with dramatic m..

The Brecon to Cardiff Xtreme is a challenging 75-kilometer mountain ultramarathon traversing 11 major peaks between Brecon and Cardiff, featuring approximately 2,680 meters of ascent. This winter race demands advanced mountain running skills and fitness, with a linear route starting at Brecon's cana..

The St David's Day Dragon Run 2026, hosted by Saturn Running, takes place in the scenic Dare Valley Country Park, Aberdare, Wales. Celebrating the patron saint of Wales, this event offers a unique 7-hour time challenge where participants can choose their running distance, starting from a minimum of..

The Winter Green Man Ultra (Winter GMU) is a challenging ultra marathon held annually around Bristol, UK. Scheduled for March 7, 2026, it offers two distances: a 45-mile (72 km) full loop and a 30-mile (48 km) partial loop of the Community Forest Path. The course runs anti-clockwise with 4 well-stoc..

The Hateful 8 Loopy Ultra is an endurance running event held at Bridgend Miniature Railway in Aberkenfig, Bridgend, South Wales. Participants tackle a challenging 9-mile mixed terrain loop featuring a tough hill, scenic road sections with stunning views, and a technical downhill forestry trail. Runn..

The Hannington Hike will take place in Hannington on Sunday 8 March 2026.

The Nant Yr Arian Silver Trail Races, set in the stunning Cambrian Mountains, offer participants a choice of challenging routes, including a Half Marathon and a 10km race, suitable for both beginners and experienced runners. The event also features children's races for various age groups. With fully..

The Forest of Dean Spring Trails Half Marathon is a scenic 13.1-mile race held annually in the Forest of Dean, starting and finishing near the Speech House Hotel. The course features well-maintained woodland trails with gentle inclines, offering a multi-terrain experience through beautiful forest la..

The Way of the Dead is a challenging 50k running event traversing Dartmoor from east to west, organized by Wild Running. Participants can compete solo or in pairs, with live GPS tracking and three checkpoints that also serve as feed stations. The route features minimal ascent of 1389 meters but requ..

The Bath 50 Ultra Challenge is a premier trekking and trail running event held in the historic city of Bath, UK. Participants can choose from three looped distances: 50 km, 29 km, or 10 km, all starting and finishing at Bath Racecourse. The 50 km route features 1,000 meters of elevation and offers p..

The Bristol Trail & Ultra, held on 28 March 2026, is a trail running event in Bristol offering two distances: a 25km trail and a 55km ultra. Both races start and finish at Museum Square in central Bristol, taking runners through scenic woodland, riverside paths, parks, and disused railway lines. The..

The Minster Challenge is a running event held in Axminster, Devon, organized by Ruby Red Running in partnership with Axe Valley Academy. Scheduled for March 29, 2026, it offers three distances: a challenging 12km route for those 17 and over, a 5km course for runners aged 12 and above, and a 3km fun..

Ultra in The Black Country is a scenic long-distance running event taking place on March 29, 2026, starting and finishing at Baggeridge Country Park near Dudley, West Midlands. Participants can choose to run solo, in pairs, or as a team of four, covering a 32-mile loop that features urban escapes li..

The Combe Gibbet to Overton Race will take place in Overton on Sunday 29 March 2026.

The Pendine Sands Races, held at Pendine Beach in Wales, offer runners the unique experience of racing on firm, flat sands famously used for land speed records. The event features 5k, 10k, Half Marathon, and Full Marathon distances, all run along the beach with out-and-back courses marked by race ma..

Steaming to the Coast is a unique trail running event held along the scenic West Somerset Railway in Minehead, Somerset. Utilizing the UK's longest standard gauge steam railway, participants ride a steam train from Minehead to Bishops Lydeard before embarking on their runs. The event offers three di..

The Vale Coastal Races, held along the stunning Vale of Glamorgan coastline in Wales, offer three trail running distances: a 32.5-mile ultra, an 18.5-mile "mini ultra," and a 10-mile race. The ultra race follows a linear route from Penarth Pier to Ogmore-by-sea, hugging clifftops and passing 19 beac..